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statistics
Introduction: Use the same scenario you submitted for the first assignment with modifications using your instructor’s f ...
statistics
Introduction: Use the same scenario you submitted for the first assignment with modifications using your instructor’s feedback, if needed. Include Table 1: Variables Selected for the Analysis you used in Assignment #1 to show the variables you selected for analysis. Table 1. Variables Selected for the Analysis Variable Name in data set Description Type of Variable (Qualitative or Quantitative) Variable 1: “Income” Annual household income in USD. Quantitative Variable 2: Variable 3: Variable 4: Variable 5: Data Set Description and Method Used for Analysis: Results: Variable 1: Income Numerical Summary. Table 2. Descriptive Analysis for Variable 1 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Income Median= SD = Graph and/or Table: Histogram of Income (Place Histogram here) Description of Findings. Variable 2: (Fill in name of variable) Numerical Summary. Table 3. Descriptive Analysis for Variable 2 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 3: (Fill in name of variable) Numerical Summary. Table 4. Descriptive Analysis for Variable 3 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 4: (Fill in name of variable) Numerical Summary. Table 5. Descriptive Analysis for Variable 4 Variable N Mean/Median St. Dev. Variable 4: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 5: (Fill in name of variable) Numerical Summary. Table 6. Descriptive Analysis for Variable 5 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Discussion and Conclusion. Briefly discuss each variable in the same sequence as presented in the results. What has the highest expenditure? What variable has the lowest expenditure? If you were to recommend a place to save money, which expenditure would it be and why? Note: The section should be no more than 2 paragraphs.
4 pages
Deliverable 03 Questions
1. Discuss the importance of constructing confidence intervals for the population mean by o What is the best point estimat ...
Deliverable 03 Questions
1. Discuss the importance of constructing confidence intervals for the population mean by o What is the best point estimate for the population mean? ...
MATH 265 DeVry University Substituting Values of Constants Worksheet
Do you have the solution for this project?Math265 Project Part BName:In this part of the project, you will model the behav ...
MATH 265 DeVry University Substituting Values of Constants Worksheet
Do you have the solution for this project?Math265 Project Part BName:In this part of the project, you will model the behavior of a resistor-inductor (RL) circuit in a transient state. Initially, the DC voltage source is off and there is no current in the circuit.After the source ‘ε’ is turned on, the current through the inductor quickly rises and produces an EMF that opposes the change in current:where ‘L’ is the inductanceUsing Kirchhoff’s Voltage Law and Ohm’s Law results in the equationThis differential equation can be solved to determine an expression for the current through the circuit as a function of time:whereis the final current andis known as the inductive time constant.The theoretical EMF produced by the inductor can be found as follows:Graphing Current vs Time (25 points)Consider an RL circuit that is being charged with a voltage source ε.The voltage across the inductor is shown as a function of time in the table below, with time in seconds (s) and voltage in volts (V).The magnitude of the current at time tf can be determined from the voltage (v) as where I(ti) is the current at time ti.We will use a technique to calculate this integral algebraically, to determine the current from the voltage. By doing so, we are finding the approximate area under the voltage versus time curve.To determine the current at a time ‘2’, where time ‘1’ is the previous interval, useThe numerator is the average voltage multiplied by the time interval and is an algebraic approximation for the area underneath the voltage versus time curve between t1 and t2. In this example, for each interval, .Referencing the voltage in the table below, to determine the current for the first cell and knowing that at time t=0s, and for the next cellRepeat the process to fill in all of the cells in the table maintaining 3 significant figures for the current.Time (s)Voltage (V)I(A)0.0E+005.0003.0E-072.740.001166.0E-071.510.001809.0E-070.831.2E-060.451.5E-060.251.8E-060.142.1E-060.072.4E-060.042.7E-060.023.0E-060.01Open Desmos by copying and pasting the following link into your web browser or use control+click(https://www.desmos.com/calculator/lhdbhowyyh). Enter the data from the table for current in the column ‘y1’. You will fit the data using the theoretical equation for current as a function of time.Adjust the fitting parameters ‘a’ and ‘b’ using the sliders so that the curve matches the points.Since we are using an approximating method for calculating the points, the curve will not be an exact match. To fit the curve as well as possible, note the R2 value.R2 is known as the coefficient of determination.It is a unit-less number between 0 and 1 and indicates how well the curve fits the points.The closer R2 is to 1, the better the fit.Adjust ‘a’ and ‘b’ so that R2 is as close to 1 as possibleRecord your fitting parameters below as well as your R2 value:a=b=R2=Comparing to the equation for current above, noting thatand given that , determine the resistor value.Show your workR=Noting that , determine the value of the inductor.Show your work.L=Take a screenshot of Desmos showing current versus time and your data and paste below.Screenshot of DesmosGraphing Voltage vs Time (25 points)The magnitude of the voltage across the inductor was shown to be where Open Desmos by copying and pasting the following link into your web browser or use control+click(https://www.desmos.com/calculator/g3dkvlljti)Using Desmos and the quantities R, L and ε from Section I., plot the voltage as a function of time, using the equation above.In Desmos, type the values for ε, R and L to replace the # symbols in the equation provided. Copy and paste your graph with the theoretical voltage versus time below.Screenshot of Desmos: Summary of Section I (10 points)Write a two paragraph summary of your findings from Section I.Explain the setup and the results.Section I SummarySummary of Section II (10 points)Write a two paragraph summary of your findings from Section II.Explain the setup and the results. Section II Summary
5-1 Final Project Milestone Two: Organizational Cost and Profit
Class welcome to module 5,Milestone 2 is due at the end of this module. Milestone 2 drills down into cost factors. Make ...
5-1 Final Project Milestone Two: Organizational Cost and Profit
Class welcome to module 5,Milestone 2 is due at the end of this module. Milestone 2 drills down into cost factors. Make sure you have corrected any issues from Milestone 1, otherwise these errors can cause problems in Milestone 2. Also, you need to take care in organizing your Milestone 2 reports in a logical manner and properly labeling the charts and tables.In Part A you will be producing three costs for each BIN. Those will be:Transport Cost (what did each shipment in each BIN actually cost to ship) Cost per pallet (if you take the transport cost and divide by number of pallets shipped you will get cost per pallet)Cost of shipping (what did it cost the company to make all the shipments in this BIN)In this part you do need to examine where the break-even point is between shipping individual pallets and when it is cheaper to simply use a whole truck. For example, if it costs $210 to ship pallets individually to Omaha and it costs $1000 to send a whole truck (full or not) you would realize that for any shipment above four pallets (4 x $210 = $840) it would be cheaper to use a whole truck (5 x $210 = $1050). So, for shipments in BINs less than 5, the Transport Costs would equal the cost per pallet and for shipments in BINs 5 to a BIN 24 the Transport Cost would be equal to the cost of a full truck. In Part B-C, COGs is the Cost of Goods Sold and it equals the cost of producing the wine shipped. Be very careful with Parts A-D because the parts build on each other, so a mistake made earlier can foul up the rest of your work.This week you are also being introduced to ‘Solver’. Make sure that it is part of your Excel program or that you have downloaded it as an Add-In. If you are wondering if you have Solver, just look at your ribbon bar and it should appear (for example on this screen shot it is under Data Analysis on the left side. If you click on Solver, a box (see below) will appear. If you have not used Solver before, it will take some time to master and you will experience some trial and error. Start early! What Solver basically figures out is what is possible when you are working with multiple constraints. An example if you were building boxes and you knew that each box required 1 sheet of plywood, 20 linear feet of framing material, and 30 nails, and you had a supply of 20 sheets of plywood, 260 linear feet of framing material, and 900 nails how many boxes could you make? In this simple case the amount of supplies you have would be your constraints. You could look at each constraint individually:Plywood, you have 20 sheets and each box requires 1 sheet per box- so you have enough for 20 boxesFraming material, you have 260 liner feet and each box requires 20 feet- so you have enough for 13 boxesNails, you have 900 and each box requires 30- so you have enough for 30 boxesIn this case the binding constraint is the framing material, it will limit total production to 13 boxes.However, as the formulas become more complex and there are more variables, the time need to solve the problem would become increasing time consuming. Therefore, we use Solver. When you take the Quiz and the following question appears “What three things do you need to specify before running Solver?” on your quiz do not worry if you get it wrong. There is a problem with the question and I will issue you credit for the question. You need to master the use of Solver because in Milestone 3 it accounts for a large percentage of the grade. Keep up the good work!Steve O’Malley
University of Phoenix Chapter 7 Coronavirus and Americas Economy Article HW
Research an article on a current event that centers on a controversial issue where the two sides are claiming opposing vie ...
University of Phoenix Chapter 7 Coronavirus and Americas Economy Article HW
Research an article on a current event that centers on a controversial issue where the two sides are claiming opposing views. Then, describe how you would analyze the situation to settle the issue if you were involved in this event. For example, if the article was about whether a proposed new law about gun control will reduce deaths, you may describe how you would use hypothesis testing to compare data from states where such laws exist. Or, if the article was about actions to take to reduce gas prices, you could talk about how you would use regression to figure out which factors affected prices at the pump the most. General discussions like “should marijuana be legal” or “do vaccines cause autism” are not appropriate. Pick a current and specific debate.Please note that this discussion should be limited to how statistical analysis can be applied to current issues. This is not the place to champion a particular position on the issue you are discussing or get into an argument about the various sides of an issue. Remember, you are here to analyze, not proselytize.Also note that the article you are citing must be discussing the opposing views on the issue. Do not introduce your own perspective on what is being disputed. For example if the article is about the new budget being passed but does not discuss any conflicts of opinion, it doesn’t qualify.Please use the template below in your answers so everyone can easily follow your answers to all the questions (copy and paste to your post).Use this template for your Unit 6 Discussion.Summary of the articleBriefly describe the current event described in the article.Central questionWhat does the article say about the issue being disputed? What are the conflicting points of view according to the article? Use direct quotes from the article to summarize the dispute and the opposing sides.There has to be some specific issue in dispute at the center (do tax breaks increase spending, what impacts health care costs the most, etc.), and the sides have to be defending a particular position.Do not use examples where the issue is based on opinions or morality. For example, “Should abortion be legal?” is largely a morality question and is not suitable for statistical analysis. Conducting a survey to ask people about their opinions is not the same as analyzing data and making conclusions- you still only have opinions.MethodologyExplain which methodology you will apply. Provide the relevant details. Where will your data come from? How will the results from this methodology answer the question you described above?If you are going to use forecasting, explain how you will do that (which methodology and why) and how you will measure your accuracy. How will the forecast settle the issue?If you do a regression analysis, explain what the dependent and independent variables will be.If you will do hypothesis testing, what will the null and alternative hypothesis be?
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statistics
Introduction: Use the same scenario you submitted for the first assignment with modifications using your instructor’s f ...
statistics
Introduction: Use the same scenario you submitted for the first assignment with modifications using your instructor’s feedback, if needed. Include Table 1: Variables Selected for the Analysis you used in Assignment #1 to show the variables you selected for analysis. Table 1. Variables Selected for the Analysis Variable Name in data set Description Type of Variable (Qualitative or Quantitative) Variable 1: “Income” Annual household income in USD. Quantitative Variable 2: Variable 3: Variable 4: Variable 5: Data Set Description and Method Used for Analysis: Results: Variable 1: Income Numerical Summary. Table 2. Descriptive Analysis for Variable 1 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Income Median= SD = Graph and/or Table: Histogram of Income (Place Histogram here) Description of Findings. Variable 2: (Fill in name of variable) Numerical Summary. Table 3. Descriptive Analysis for Variable 2 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 3: (Fill in name of variable) Numerical Summary. Table 4. Descriptive Analysis for Variable 3 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 4: (Fill in name of variable) Numerical Summary. Table 5. Descriptive Analysis for Variable 4 Variable N Mean/Median St. Dev. Variable 4: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Variable 5: (Fill in name of variable) Numerical Summary. Table 6. Descriptive Analysis for Variable 5 Variable n Measure(s) of Central Tendency Measure(s) of Dispersion Variable: Graph and/or Table. (Place Graph or Table Here) Description of Findings. Discussion and Conclusion. Briefly discuss each variable in the same sequence as presented in the results. What has the highest expenditure? What variable has the lowest expenditure? If you were to recommend a place to save money, which expenditure would it be and why? Note: The section should be no more than 2 paragraphs.
4 pages
Deliverable 03 Questions
1. Discuss the importance of constructing confidence intervals for the population mean by o What is the best point estimat ...
Deliverable 03 Questions
1. Discuss the importance of constructing confidence intervals for the population mean by o What is the best point estimate for the population mean? ...
MATH 265 DeVry University Substituting Values of Constants Worksheet
Do you have the solution for this project?Math265 Project Part BName:In this part of the project, you will model the behav ...
MATH 265 DeVry University Substituting Values of Constants Worksheet
Do you have the solution for this project?Math265 Project Part BName:In this part of the project, you will model the behavior of a resistor-inductor (RL) circuit in a transient state. Initially, the DC voltage source is off and there is no current in the circuit.After the source ‘ε’ is turned on, the current through the inductor quickly rises and produces an EMF that opposes the change in current:where ‘L’ is the inductanceUsing Kirchhoff’s Voltage Law and Ohm’s Law results in the equationThis differential equation can be solved to determine an expression for the current through the circuit as a function of time:whereis the final current andis known as the inductive time constant.The theoretical EMF produced by the inductor can be found as follows:Graphing Current vs Time (25 points)Consider an RL circuit that is being charged with a voltage source ε.The voltage across the inductor is shown as a function of time in the table below, with time in seconds (s) and voltage in volts (V).The magnitude of the current at time tf can be determined from the voltage (v) as where I(ti) is the current at time ti.We will use a technique to calculate this integral algebraically, to determine the current from the voltage. By doing so, we are finding the approximate area under the voltage versus time curve.To determine the current at a time ‘2’, where time ‘1’ is the previous interval, useThe numerator is the average voltage multiplied by the time interval and is an algebraic approximation for the area underneath the voltage versus time curve between t1 and t2. In this example, for each interval, .Referencing the voltage in the table below, to determine the current for the first cell and knowing that at time t=0s, and for the next cellRepeat the process to fill in all of the cells in the table maintaining 3 significant figures for the current.Time (s)Voltage (V)I(A)0.0E+005.0003.0E-072.740.001166.0E-071.510.001809.0E-070.831.2E-060.451.5E-060.251.8E-060.142.1E-060.072.4E-060.042.7E-060.023.0E-060.01Open Desmos by copying and pasting the following link into your web browser or use control+click(https://www.desmos.com/calculator/lhdbhowyyh). Enter the data from the table for current in the column ‘y1’. You will fit the data using the theoretical equation for current as a function of time.Adjust the fitting parameters ‘a’ and ‘b’ using the sliders so that the curve matches the points.Since we are using an approximating method for calculating the points, the curve will not be an exact match. To fit the curve as well as possible, note the R2 value.R2 is known as the coefficient of determination.It is a unit-less number between 0 and 1 and indicates how well the curve fits the points.The closer R2 is to 1, the better the fit.Adjust ‘a’ and ‘b’ so that R2 is as close to 1 as possibleRecord your fitting parameters below as well as your R2 value:a=b=R2=Comparing to the equation for current above, noting thatand given that , determine the resistor value.Show your workR=Noting that , determine the value of the inductor.Show your work.L=Take a screenshot of Desmos showing current versus time and your data and paste below.Screenshot of DesmosGraphing Voltage vs Time (25 points)The magnitude of the voltage across the inductor was shown to be where Open Desmos by copying and pasting the following link into your web browser or use control+click(https://www.desmos.com/calculator/g3dkvlljti)Using Desmos and the quantities R, L and ε from Section I., plot the voltage as a function of time, using the equation above.In Desmos, type the values for ε, R and L to replace the # symbols in the equation provided. Copy and paste your graph with the theoretical voltage versus time below.Screenshot of Desmos: Summary of Section I (10 points)Write a two paragraph summary of your findings from Section I.Explain the setup and the results.Section I SummarySummary of Section II (10 points)Write a two paragraph summary of your findings from Section II.Explain the setup and the results. Section II Summary
5-1 Final Project Milestone Two: Organizational Cost and Profit
Class welcome to module 5,Milestone 2 is due at the end of this module. Milestone 2 drills down into cost factors. Make ...
5-1 Final Project Milestone Two: Organizational Cost and Profit
Class welcome to module 5,Milestone 2 is due at the end of this module. Milestone 2 drills down into cost factors. Make sure you have corrected any issues from Milestone 1, otherwise these errors can cause problems in Milestone 2. Also, you need to take care in organizing your Milestone 2 reports in a logical manner and properly labeling the charts and tables.In Part A you will be producing three costs for each BIN. Those will be:Transport Cost (what did each shipment in each BIN actually cost to ship) Cost per pallet (if you take the transport cost and divide by number of pallets shipped you will get cost per pallet)Cost of shipping (what did it cost the company to make all the shipments in this BIN)In this part you do need to examine where the break-even point is between shipping individual pallets and when it is cheaper to simply use a whole truck. For example, if it costs $210 to ship pallets individually to Omaha and it costs $1000 to send a whole truck (full or not) you would realize that for any shipment above four pallets (4 x $210 = $840) it would be cheaper to use a whole truck (5 x $210 = $1050). So, for shipments in BINs less than 5, the Transport Costs would equal the cost per pallet and for shipments in BINs 5 to a BIN 24 the Transport Cost would be equal to the cost of a full truck. In Part B-C, COGs is the Cost of Goods Sold and it equals the cost of producing the wine shipped. Be very careful with Parts A-D because the parts build on each other, so a mistake made earlier can foul up the rest of your work.This week you are also being introduced to ‘Solver’. Make sure that it is part of your Excel program or that you have downloaded it as an Add-In. If you are wondering if you have Solver, just look at your ribbon bar and it should appear (for example on this screen shot it is under Data Analysis on the left side. If you click on Solver, a box (see below) will appear. If you have not used Solver before, it will take some time to master and you will experience some trial and error. Start early! What Solver basically figures out is what is possible when you are working with multiple constraints. An example if you were building boxes and you knew that each box required 1 sheet of plywood, 20 linear feet of framing material, and 30 nails, and you had a supply of 20 sheets of plywood, 260 linear feet of framing material, and 900 nails how many boxes could you make? In this simple case the amount of supplies you have would be your constraints. You could look at each constraint individually:Plywood, you have 20 sheets and each box requires 1 sheet per box- so you have enough for 20 boxesFraming material, you have 260 liner feet and each box requires 20 feet- so you have enough for 13 boxesNails, you have 900 and each box requires 30- so you have enough for 30 boxesIn this case the binding constraint is the framing material, it will limit total production to 13 boxes.However, as the formulas become more complex and there are more variables, the time need to solve the problem would become increasing time consuming. Therefore, we use Solver. When you take the Quiz and the following question appears “What three things do you need to specify before running Solver?” on your quiz do not worry if you get it wrong. There is a problem with the question and I will issue you credit for the question. You need to master the use of Solver because in Milestone 3 it accounts for a large percentage of the grade. Keep up the good work!Steve O’Malley
University of Phoenix Chapter 7 Coronavirus and Americas Economy Article HW
Research an article on a current event that centers on a controversial issue where the two sides are claiming opposing vie ...
University of Phoenix Chapter 7 Coronavirus and Americas Economy Article HW
Research an article on a current event that centers on a controversial issue where the two sides are claiming opposing views. Then, describe how you would analyze the situation to settle the issue if you were involved in this event. For example, if the article was about whether a proposed new law about gun control will reduce deaths, you may describe how you would use hypothesis testing to compare data from states where such laws exist. Or, if the article was about actions to take to reduce gas prices, you could talk about how you would use regression to figure out which factors affected prices at the pump the most. General discussions like “should marijuana be legal” or “do vaccines cause autism” are not appropriate. Pick a current and specific debate.Please note that this discussion should be limited to how statistical analysis can be applied to current issues. This is not the place to champion a particular position on the issue you are discussing or get into an argument about the various sides of an issue. Remember, you are here to analyze, not proselytize.Also note that the article you are citing must be discussing the opposing views on the issue. Do not introduce your own perspective on what is being disputed. For example if the article is about the new budget being passed but does not discuss any conflicts of opinion, it doesn’t qualify.Please use the template below in your answers so everyone can easily follow your answers to all the questions (copy and paste to your post).Use this template for your Unit 6 Discussion.Summary of the articleBriefly describe the current event described in the article.Central questionWhat does the article say about the issue being disputed? What are the conflicting points of view according to the article? Use direct quotes from the article to summarize the dispute and the opposing sides.There has to be some specific issue in dispute at the center (do tax breaks increase spending, what impacts health care costs the most, etc.), and the sides have to be defending a particular position.Do not use examples where the issue is based on opinions or morality. For example, “Should abortion be legal?” is largely a morality question and is not suitable for statistical analysis. Conducting a survey to ask people about their opinions is not the same as analyzing data and making conclusions- you still only have opinions.MethodologyExplain which methodology you will apply. Provide the relevant details. Where will your data come from? How will the results from this methodology answer the question you described above?If you are going to use forecasting, explain how you will do that (which methodology and why) and how you will measure your accuracy. How will the forecast settle the issue?If you do a regression analysis, explain what the dependent and independent variables will be.If you will do hypothesis testing, what will the null and alternative hypothesis be?
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