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Explanation & Answer
Answer:
the circumference C of a circle, is given by the subsequent formula:
C = 2*3.14*R, where R is the radius of that circle. Noe, we have:
R = 18/2 = 9cm, since diameter= 2*R,
then:
C = 2*3.14*9= 56.52 cm
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National Opinion Polls Paper
National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the ...
National Opinion Polls Paper
National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the opinions of all adults in the nation. Explain who is in the sample and who is in the population for such polls. Please use a poll from a newspaper, TV, a magazine, or from the Internet (Chapter 8).You may use the information in the textbook or cite a source. FYI : Chapter 8 - Hypothesis Testing: All Sections Elementary Statistics, 13th Edition
Week 4 Discussion Questions
1. Many times, linear optimization is used to maximize an objective function because profit, productivity, or efficiency i ...
Week 4 Discussion Questions
1. Many times, linear optimization is used to maximize an objective function because profit, productivity, or efficiency is the outcome of interest. Provide two examples where the goal is to optimize a process by minimizing an objective function. In your examples, identify the outcome and any constraints that would need to be met.2. When many constraints are present in a linear optimization problem, there is a greater chance that a redundant constraint exists. Assume you are trying to maximize an objective function and you have two decision variables, X1 and X2. If a redundant constraint exists, does the constraint become necessary if you try to minimize (instead of maximize) the same objective function? Why? Do you need an objective function to determine if a constraint is redundant? Explain.
Ohio University WK7 Statistics Probabilities Questions
INSTRUCTIONSInstructionsIf the question requires computation, do the calculations and then give or select the correct valu ...
Ohio University WK7 Statistics Probabilities Questions
INSTRUCTIONSInstructionsIf the question requires computation, do the calculations and then give or select the correct values using the following rule:Keep at least 4 decimal places at intermediate steps of a calculation, and round your final answer to 2 decimal places, unless otherwise noted. For example: 16.6667 would become 16.67 after rounding(In the course notes for Module 7, probabilities such .678934 are instead rounded to four decimal places, so the correct way to report the aforementioned probability is .6789Question 1Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 29 27 Shooting Guard (SG) 19 29 Center (C) 37 10 Small Forward (SF) 19 39 Power Forward (PF) 16 13 Find the following probability: p(SG) (If necessary, round answer to 4 decimal places) Question 2Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 24 29 Shooting Guard (SG) 17 21 Center (C) 13 14 Small Forward (SF) 20 17 Power Forward (PF) 27 37 Find the following probability: p(C and NCE) (If necessary, round answer to 4 decimal places) Question 3Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 24 19 Shooting Guard (SG) 24 30 Center (C) 30 25 Small Forward (SF) 14 24 Power Forward (PF) 11 33 Find the following probability: p(CE) (If necessary, round answer to 4 decimal places) Question 4Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 16 38 Shooting Guard (SG) 11 38 Center (C) 29 10 Small Forward (SF) 31 35 Power Forward (PF) 20 35 Find the following probability: p(not C) (If necessary, round answer to 4 decimal places) Question 5Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 20 15 Shooting Guard (SG) 27 33 Center (C) 11 15 Small Forward (SF) 20 33 Power Forward (PF) 23 30 Find the following probability: p(CE/PG) (If necessary, round answer to 4 decimal places) Question 6Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 38 34 Shooting Guard (SG) 23 31 Center (C) 16 36 Small Forward (SF) 36 29 Power Forward (PF) 18 35 Find the following probability: p(PG/CE) (If necessary, round answer to 4 decimal places) Question 7Randomly sample one person from a population of 100 people: 50 children, 20 teens, and 30 adults. What is the probability that your selectee is a child OR an adult? (Leave your answer in probability decimal form with 2 decimal places; do not convert to a percentage.)Question 8A stable has all American Quarter Horses. There are 21 bays, 10 blacks, and 8 red duns. (Use these data for this question only.) What is the probability that you randomly select a black, don’t put the black back, then draw another black, don’t put that black back, and then draw another black quarter horse? (If necessary, round answer to 4 decimal places)Question 9A stable has all American Quarter Horses. There are 24 bays, 11 blacks, and 11 red duns. (Use these data for this question only.) What is the probability that you draw a bay or a red dun on the first draw, replace that horse, and then draw a black horse? (If necessary, round answer to 4 decimal placesQuestion 10A stable has all American Quarter Horses. There are 20 bays, 13 blacks, and 7 red duns. (Use these data for this question only.) What is the probability that you draw a red dun on the first draw, don’t put the red dun back, and then draw either a red dun or a bay on the second draw? (If necessary, round answer to 4 decimal places) Question 11Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IV Has Diabetes 67 69 No Diabetes 8 27 What is the probability of selecting someone who does not have diabetes, given that they are on a feeding tube? (If necessary, round answer to 4 decimal places)Question 12Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IVHas Diabetes 74 30No Diabetes 7 20What is the probability of selecting someone who has diabetes and on an IV?(If necessary, round answer to 4 decimal places)Question 13Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IV Has Diabetes 65 48 No Diabetes 10 34 What is the probability of selecting someone who is on an IV, given that they do not have diabetes? (If necessary, round answer to 4 decimal places)Question 14A six-sided die is rolled 3 times. Which outcome is most likely?1-2-33-5-25-5-5All are equally likelyNone of the aboveQuestion 15Which of the following is not a valid way to express a probability?2/314/17.9-0.1All are validQuestion 16The gambler’s fallacy applies toIndependent eventsCategorical variablesMutually exclusive eventsFalse positivesQuestion 17An exhaustive set of events isA set of events that do not depend on the outcome of other events.A list of the most likely outcomes.A list of all possibilities.A set of events that are not mutually exclusive.something that leaves you fatigued and in need of extra sleep ; -)Question 18Which of the following is an example of the subjective view of probability?By reviewing insurance paperwork of all patients, a hospital administrator determined that coding errors are made 13% of the time.By reviewing insurance paperwork of a random sample of patients, a hospital administrator determined that coding errors are made 8% of the time.By remembering his experiences dealing with insurance errors, a hospital administrator determined that coding errors are made 20% of the time.Question 19A student guesses randomly on four true/false questions on an exam. What is the probability that all answers are correct?0.0625.3333.51Question 20Which of the following is not an example of independent events?A student guesses randomly on 6 exam questions.A gambler rolls a pair of dice three times.Four cards are drawn from a deck, with replacement.Three cards are drawn from a deck, without replacement.
STAT250 George Mason University Data Analysis Probability
Please take a look at the attached Data Analysis assignment and let me know if you can help.
STAT250 George Mason University Data Analysis Probability
Please take a look at the attached Data Analysis assignment and let me know if you can help.
Descriptive Data Analysis and Measure of Central Tendency & Dispersion Paper
You will undertake an analysis
based on a self-designed fictitious study that utilizes statistical
methodologies. You ...
Descriptive Data Analysis and Measure of Central Tendency & Dispersion Paper
You will undertake an analysis
based on a self-designed fictitious study that utilizes statistical
methodologies. You will first develop a fictitious problem to examine -
it can be anything. For example, maybe you want to look at whether
scores on a standardized college placement test (like the SAT) are
related to the level of income a person makes 10 years after college;
Or, whether those who participate in a Leadership Training program rated
as better managers compared to those who do not; Or, whether ones
political affiliation is related to gender. These are just a few
examples; be creative and think about what piques your interest. You
might also address a problem that you may want to look at in future
research for a dissertation or post-graduation research you may want to
do. You will use either EXCEL or SPSS to conduct the analysis. Your
analysis report should include the following components:Describe your research study.State a hypothesis.List
and explain the variables you would collect in this study. There must
be a minimum of three variables and two must meet the assumptions for a
correlational analysis.Create a fictitious data set that you will analyze. The data should have a minimum of 30 cases, but not more than 50 cases.Conduct a descriptive data analysis that includes the following:
a measure of central tendencya measure of dispersion at least one graphBriefly interpret the descriptive data analysis.Conduct
the appropriate statistical test that will answer your hypothesis. It
must be a statistical test covered in this course such as regression
analysis, single t-test, independent t-test, cross-tabulations,
Chi-square, or One-Way ANOVA. Explain your justification for using the
test based on the type of data and the level of measurement that the
data lends to for the statistical analysis.Report and
interpret your findings. Use APA style and include a statement about
whether you reject or fail to reject the null hypothesis. Here are some
resources that will help you with APA formatting in this step:Reporting Statistics in APA StyleReporting Results of Common Statistical Tests in APA FormatCopy and paste your Excel or SPSS data output and place it in an appendix.Submit
an annotated bibliography of five articles directly related to your
dissertation topic. For each article, please provide the reference in
APA format and then answer the following questions:1a. If a
study: What was the purpose of this study? Briefly summarize how they
designed the study and collected their data. What, for you, was the most
salient result they found?1b. If not a study: What was the purpose of the article and what for you was the key take-away message?2.
What are the main strengths, weaknesses, and unique aspects of this
resource?3. How might you use this resource in the future (e.g., I might
use this article in my literature review to support the need for my
study; I might use the measure they developed in this study; I might use
the same theory used in this study....)
NorthWest Arkansas Community College Regression Statistics Exam Practice
QUESTION 1Given the data below, a researcher would like to know whether someone's age group affects their choice of toilet ...
NorthWest Arkansas Community College Regression Statistics Exam Practice
QUESTION 1Given the data below, a researcher would like to know whether someone's age group affects their choice of toilet paper brand. Observed Brand A Brand B Brand C SumTeen 120 130 110 360Mid-Age 77 127 140 344Senior 84 100 98 282 281 357 348 986A complete answer should:Indicate which test she should use.State hypothesesReport if the test was significant and what decision is madeRun any necessary post-hoc analysis (and paste the result in the answer)Provide a conclusion sentence and the statistics in APA format.QUESTION 2A tutor measures her students with a 5 point algorithm, and she would like to know if her 6 students improved this month.Student Day 1 Day 30A 2.4 3.0B 2.5 2.8C 3.0 2.9D 2.9 2.4E 2.7 3.5F 2.1 2.9A complete answer should:Indicate which test she should use.State hypothesesReport if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 3:For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)SUMMARY OUTPUT Regression Statistics Multiple R 0.237673 R Square 0.056489 Adjusted R Square 0.015466 Standard Error 20.51556 Observations 25 ANOVA df SS MS F Significance F Regression 1 579.5726 579.5726 1.377023 0.252618 Residual 23 9680.427 420.8881 Total 24 10260 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%Intercept 63.68956 6.886156 9.248928 3.27E-09 49.44446 77.93465 49.44446 77.93465Absences -1.72595 1.47081 -1.17347 0.252618 -4.76855 1.316657 -4.76855 1.316657QUESTION 4For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format. Observed Values Expected Values Attended Did Not Attend Sum Attended Did Not AttendJoined 10 12 22 Joined 6.695652 15.30435Did Not Join 4 20 24 Did Not Join 7.304348 16.69565 14 32 46 Observed Expected (O-E)2 (O-E)2 /E Joined and Attended 10 6.695652174 10.91871 1.630717 Did Not Join and Did Not Attend 12 15.30434783 10.91871 0.713439 Joined and Attended 4 7.304347826 10.91871 1.494824 Did Not Join and Did Not Attend 20 16.69565217 10.91871 0.653986 X2 4.492965 P Value 0.034035 QUESTION 5A principal wanted to know if the location of testing affected student performance on a statewide standardized test. He collected the following data:Control 60 degrees Classical Music Next to Cafeteria31 53 27 2916 39 36 1811 71 32 1619 39 14 2043 54 40 749 41 60 124 9 47 2011 17 2 4534 13 27 3339 8 5 5360 32 55 2340 29 53 2457 35 27 1859 45 4 4943 42 50 29A complete answer should:Indicate which test should be used.State hypothesesReport if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 6For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result.SUMMARY Groups Count Sum Average Variance Group 1 25 1467 58.68 253.2267 Group 2 25 1525 61 628.75 Group 3 25 1592 63.68 403.2267 Source of Variation SS df MS F P-value F critBetween Groups 7698.107 2 3849.053 8.984695 0.000329 3.123907Within Groups 30844.88 72 428.4011 Total 38542.99 74 QUESTION 7Given the data below, does the number of minutes spent exercises affect the number of glasses of water a person consumes?Glasses of Water Minutes1 501 271 252 672 252 503 803 333 153 763 383 413 224 844 674 694 814 55A complete answer should:Indicate which test she should use.Report if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 8For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)Two-Sample Assuming Unequal Variances Group 1 Group 2Mean 61.90909 49.64Variance 341.5152 472.9067Observations 22 25Hypothesized Mean Difference 0 df 45 t Stat 2.090657 P(T<=t) one-tail 0.021119 t Critical one-tail 1.679427 P(T<=t) two-tail 0.042237 t Critical two-tail 2.014103 QUESTION 9For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)t-Test: Paired Two Sample for Means Group 1 Group 2Mean 67 84.38461538Variance 423.1666667 209.4230769Observations 13 13Pearson Correlation 0.129328052 Hypothesized Mean Difference 0 df 12 t Stat -2.659252971 P(T<=t) one-tail 0.010410066 t Critical one-tail 1.782287556 P(T<=t) two-tail 0.020820131 t Critical two-tail 2.17881283
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Most Popular Content
National Opinion Polls Paper
National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the ...
National Opinion Polls Paper
National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the opinions of all adults in the nation. Explain who is in the sample and who is in the population for such polls. Please use a poll from a newspaper, TV, a magazine, or from the Internet (Chapter 8).You may use the information in the textbook or cite a source. FYI : Chapter 8 - Hypothesis Testing: All Sections Elementary Statistics, 13th Edition
Week 4 Discussion Questions
1. Many times, linear optimization is used to maximize an objective function because profit, productivity, or efficiency i ...
Week 4 Discussion Questions
1. Many times, linear optimization is used to maximize an objective function because profit, productivity, or efficiency is the outcome of interest. Provide two examples where the goal is to optimize a process by minimizing an objective function. In your examples, identify the outcome and any constraints that would need to be met.2. When many constraints are present in a linear optimization problem, there is a greater chance that a redundant constraint exists. Assume you are trying to maximize an objective function and you have two decision variables, X1 and X2. If a redundant constraint exists, does the constraint become necessary if you try to minimize (instead of maximize) the same objective function? Why? Do you need an objective function to determine if a constraint is redundant? Explain.
Ohio University WK7 Statistics Probabilities Questions
INSTRUCTIONSInstructionsIf the question requires computation, do the calculations and then give or select the correct valu ...
Ohio University WK7 Statistics Probabilities Questions
INSTRUCTIONSInstructionsIf the question requires computation, do the calculations and then give or select the correct values using the following rule:Keep at least 4 decimal places at intermediate steps of a calculation, and round your final answer to 2 decimal places, unless otherwise noted. For example: 16.6667 would become 16.67 after rounding(In the course notes for Module 7, probabilities such .678934 are instead rounded to four decimal places, so the correct way to report the aforementioned probability is .6789Question 1Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 29 27 Shooting Guard (SG) 19 29 Center (C) 37 10 Small Forward (SF) 19 39 Power Forward (PF) 16 13 Find the following probability: p(SG) (If necessary, round answer to 4 decimal places) Question 2Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 24 29 Shooting Guard (SG) 17 21 Center (C) 13 14 Small Forward (SF) 20 17 Power Forward (PF) 27 37 Find the following probability: p(C and NCE) (If necessary, round answer to 4 decimal places) Question 3Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 24 19 Shooting Guard (SG) 24 30 Center (C) 30 25 Small Forward (SF) 14 24 Power Forward (PF) 11 33 Find the following probability: p(CE) (If necessary, round answer to 4 decimal places) Question 4Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. (Use the data below for this question only) College Experience (CE) No College Experience (NCE) Point Guard (PG) 16 38 Shooting Guard (SG) 11 38 Center (C) 29 10 Small Forward (SF) 31 35 Power Forward (PF) 20 35 Find the following probability: p(not C) (If necessary, round answer to 4 decimal places) Question 5Given the upcoming NBA (professional basketball) draft, there are several players available with skills at different positions (e.g., point guard) and with or without college experience. The table below summarizes these data. 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What is the probability that your selectee is a child OR an adult? (Leave your answer in probability decimal form with 2 decimal places; do not convert to a percentage.)Question 8A stable has all American Quarter Horses. There are 21 bays, 10 blacks, and 8 red duns. (Use these data for this question only.) What is the probability that you randomly select a black, don’t put the black back, then draw another black, don’t put that black back, and then draw another black quarter horse? (If necessary, round answer to 4 decimal places)Question 9A stable has all American Quarter Horses. There are 24 bays, 11 blacks, and 11 red duns. (Use these data for this question only.) What is the probability that you draw a bay or a red dun on the first draw, replace that horse, and then draw a black horse? (If necessary, round answer to 4 decimal placesQuestion 10A stable has all American Quarter Horses. There are 20 bays, 13 blacks, and 7 red duns. (Use these data for this question only.) What is the probability that you draw a red dun on the first draw, don’t put the red dun back, and then draw either a red dun or a bay on the second draw? (If necessary, round answer to 4 decimal places) Question 11Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IV Has Diabetes 67 69 No Diabetes 8 27 What is the probability of selecting someone who does not have diabetes, given that they are on a feeding tube? (If necessary, round answer to 4 decimal places)Question 12Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IVHas Diabetes 74 30No Diabetes 7 20What is the probability of selecting someone who has diabetes and on an IV?(If necessary, round answer to 4 decimal places)Question 13Theresa has many ICU patients in her care. Some of the patients are on feeding tubes while others are on IVs only. In addition, Theresa knows that some of the patients have diabetes while some don’t. The exact breakdown is as follows: (Use these data for this question only.) Feeding Tube IV Has Diabetes 65 48 No Diabetes 10 34 What is the probability of selecting someone who is on an IV, given that they do not have diabetes? (If necessary, round answer to 4 decimal places)Question 14A six-sided die is rolled 3 times. Which outcome is most likely?1-2-33-5-25-5-5All are equally likelyNone of the aboveQuestion 15Which of the following is not a valid way to express a probability?2/314/17.9-0.1All are validQuestion 16The gambler’s fallacy applies toIndependent eventsCategorical variablesMutually exclusive eventsFalse positivesQuestion 17An exhaustive set of events isA set of events that do not depend on the outcome of other events.A list of the most likely outcomes.A list of all possibilities.A set of events that are not mutually exclusive.something that leaves you fatigued and in need of extra sleep ; -)Question 18Which of the following is an example of the subjective view of probability?By reviewing insurance paperwork of all patients, a hospital administrator determined that coding errors are made 13% of the time.By reviewing insurance paperwork of a random sample of patients, a hospital administrator determined that coding errors are made 8% of the time.By remembering his experiences dealing with insurance errors, a hospital administrator determined that coding errors are made 20% of the time.Question 19A student guesses randomly on four true/false questions on an exam. What is the probability that all answers are correct?0.0625.3333.51Question 20Which of the following is not an example of independent events?A student guesses randomly on 6 exam questions.A gambler rolls a pair of dice three times.Four cards are drawn from a deck, with replacement.Three cards are drawn from a deck, without replacement.
STAT250 George Mason University Data Analysis Probability
Please take a look at the attached Data Analysis assignment and let me know if you can help.
STAT250 George Mason University Data Analysis Probability
Please take a look at the attached Data Analysis assignment and let me know if you can help.
Descriptive Data Analysis and Measure of Central Tendency & Dispersion Paper
You will undertake an analysis
based on a self-designed fictitious study that utilizes statistical
methodologies. You ...
Descriptive Data Analysis and Measure of Central Tendency & Dispersion Paper
You will undertake an analysis
based on a self-designed fictitious study that utilizes statistical
methodologies. You will first develop a fictitious problem to examine -
it can be anything. For example, maybe you want to look at whether
scores on a standardized college placement test (like the SAT) are
related to the level of income a person makes 10 years after college;
Or, whether those who participate in a Leadership Training program rated
as better managers compared to those who do not; Or, whether ones
political affiliation is related to gender. These are just a few
examples; be creative and think about what piques your interest. You
might also address a problem that you may want to look at in future
research for a dissertation or post-graduation research you may want to
do. You will use either EXCEL or SPSS to conduct the analysis. Your
analysis report should include the following components:Describe your research study.State a hypothesis.List
and explain the variables you would collect in this study. There must
be a minimum of three variables and two must meet the assumptions for a
correlational analysis.Create a fictitious data set that you will analyze. The data should have a minimum of 30 cases, but not more than 50 cases.Conduct a descriptive data analysis that includes the following:
a measure of central tendencya measure of dispersion at least one graphBriefly interpret the descriptive data analysis.Conduct
the appropriate statistical test that will answer your hypothesis. It
must be a statistical test covered in this course such as regression
analysis, single t-test, independent t-test, cross-tabulations,
Chi-square, or One-Way ANOVA. Explain your justification for using the
test based on the type of data and the level of measurement that the
data lends to for the statistical analysis.Report and
interpret your findings. Use APA style and include a statement about
whether you reject or fail to reject the null hypothesis. Here are some
resources that will help you with APA formatting in this step:Reporting Statistics in APA StyleReporting Results of Common Statistical Tests in APA FormatCopy and paste your Excel or SPSS data output and place it in an appendix.Submit
an annotated bibliography of five articles directly related to your
dissertation topic. For each article, please provide the reference in
APA format and then answer the following questions:1a. If a
study: What was the purpose of this study? Briefly summarize how they
designed the study and collected their data. What, for you, was the most
salient result they found?1b. If not a study: What was the purpose of the article and what for you was the key take-away message?2.
What are the main strengths, weaknesses, and unique aspects of this
resource?3. How might you use this resource in the future (e.g., I might
use this article in my literature review to support the need for my
study; I might use the measure they developed in this study; I might use
the same theory used in this study....)
NorthWest Arkansas Community College Regression Statistics Exam Practice
QUESTION 1Given the data below, a researcher would like to know whether someone's age group affects their choice of toilet ...
NorthWest Arkansas Community College Regression Statistics Exam Practice
QUESTION 1Given the data below, a researcher would like to know whether someone's age group affects their choice of toilet paper brand. Observed Brand A Brand B Brand C SumTeen 120 130 110 360Mid-Age 77 127 140 344Senior 84 100 98 282 281 357 348 986A complete answer should:Indicate which test she should use.State hypothesesReport if the test was significant and what decision is madeRun any necessary post-hoc analysis (and paste the result in the answer)Provide a conclusion sentence and the statistics in APA format.QUESTION 2A tutor measures her students with a 5 point algorithm, and she would like to know if her 6 students improved this month.Student Day 1 Day 30A 2.4 3.0B 2.5 2.8C 3.0 2.9D 2.9 2.4E 2.7 3.5F 2.1 2.9A complete answer should:Indicate which test she should use.State hypothesesReport if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 3:For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)SUMMARY OUTPUT Regression Statistics Multiple R 0.237673 R Square 0.056489 Adjusted R Square 0.015466 Standard Error 20.51556 Observations 25 ANOVA df SS MS F Significance F Regression 1 579.5726 579.5726 1.377023 0.252618 Residual 23 9680.427 420.8881 Total 24 10260 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%Intercept 63.68956 6.886156 9.248928 3.27E-09 49.44446 77.93465 49.44446 77.93465Absences -1.72595 1.47081 -1.17347 0.252618 -4.76855 1.316657 -4.76855 1.316657QUESTION 4For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format. Observed Values Expected Values Attended Did Not Attend Sum Attended Did Not AttendJoined 10 12 22 Joined 6.695652 15.30435Did Not Join 4 20 24 Did Not Join 7.304348 16.69565 14 32 46 Observed Expected (O-E)2 (O-E)2 /E Joined and Attended 10 6.695652174 10.91871 1.630717 Did Not Join and Did Not Attend 12 15.30434783 10.91871 0.713439 Joined and Attended 4 7.304347826 10.91871 1.494824 Did Not Join and Did Not Attend 20 16.69565217 10.91871 0.653986 X2 4.492965 P Value 0.034035 QUESTION 5A principal wanted to know if the location of testing affected student performance on a statewide standardized test. He collected the following data:Control 60 degrees Classical Music Next to Cafeteria31 53 27 2916 39 36 1811 71 32 1619 39 14 2043 54 40 749 41 60 124 9 47 2011 17 2 4534 13 27 3339 8 5 5360 32 55 2340 29 53 2457 35 27 1859 45 4 4943 42 50 29A complete answer should:Indicate which test should be used.State hypothesesReport if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 6For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result.SUMMARY Groups Count Sum Average Variance Group 1 25 1467 58.68 253.2267 Group 2 25 1525 61 628.75 Group 3 25 1592 63.68 403.2267 Source of Variation SS df MS F P-value F critBetween Groups 7698.107 2 3849.053 8.984695 0.000329 3.123907Within Groups 30844.88 72 428.4011 Total 38542.99 74 QUESTION 7Given the data below, does the number of minutes spent exercises affect the number of glasses of water a person consumes?Glasses of Water Minutes1 501 271 252 672 252 503 803 333 153 763 383 413 224 844 674 694 814 55A complete answer should:Indicate which test she should use.Report if the test was significant and what decision is madeProvide a conclusion sentence and the statistics in APA format.QUESTION 8For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)Two-Sample Assuming Unequal Variances Group 1 Group 2Mean 61.90909 49.64Variance 341.5152 472.9067Observations 22 25Hypothesized Mean Difference 0 df 45 t Stat 2.090657 P(T<=t) one-tail 0.021119 t Critical one-tail 1.679427 P(T<=t) two-tail 0.042237 t Critical two-tail 2.014103 QUESTION 9For the following output, write a paragraph (3-4 sentences) discussing the result. Your paragraph should indicate:What test was usedWhat the test measuresWhether the test is significantWhat the result/decision was in terms of the variables and if any additional testing is necessary.Report the statistics in APA format.Make a statement of conclusion about what a researcher would learn from this result. (You may create what causes the differences in groups such as: location, worksheets, demographics, etc.)t-Test: Paired Two Sample for Means Group 1 Group 2Mean 67 84.38461538Variance 423.1666667 209.4230769Observations 13 13Pearson Correlation 0.129328052 Hypothesized Mean Difference 0 df 12 t Stat -2.659252971 P(T<=t) one-tail 0.010410066 t Critical one-tail 1.782287556 P(T<=t) two-tail 0.020820131 t Critical two-tail 2.17881283
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