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A: x = 11 only
B: no solution
C: x = 3 or x = -11
D: x = -11 only
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D: x = -11 only
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Assignment: Central Tendency and Variability
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Assignment: Central Tendency and Variability Understanding descriptive statistics and their variability is a fundamental aspect of statistical analysis. On their own, descriptive statistics tell us how frequently an observation occurs, what is considered “average”, and how far data in our sample deviate from being “average.” With descriptive statistics, we are able to provide a summary of characteristics from both large and small datasets. In addition to the valuable information they provide on their own, measures of central tendency and variability become important components in many of the statistical tests that we will cover. Therefore, we can think about central tendency and variability as the cornerstone to the quantitative structure we are building. For this assignment, you will examine central tendency and variability based on two separate variables. You will also explore the implications for positive social change based on the results of the data. Use the General Social Survey dataset http://gss.norc.org/get-the-data Use the SPSS software and choose one continuous and one categorical variable As you review, consider the implications for positive social change based on the results of your data. Part 1 Post, present, and report a descriptive analysis for your variables, specifically noting the following: For your continuous variable: Report the mean, median, and mode. What might be the better measure for central tendency? (i.e., mean, median, or mode) and why? Report the standard deviation. How variable are the data? How would you describe this data? What sort of research question would this variable help answer that might inform social change? Post the following information for your categorical variable: A frequency distribution. An appropriate measure of variation. How variable are the data? How would you describe this data? What sort of research question would this variable help answer that might inform social change? Part 2 Write a 2- to 3-paragraph analysis of your descriptive analysis results and include a copy and paste your output from your analysis into your final document. Based on the results of your data, provide a brief explanation of what the implications for social change might be. Use appropriate APA format, citations and referencing. Refer to the APA manual for appropriate citation. Some suggested references to use: Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: Sage Publications. Wagner, W. E. (2016). Using IBM® SPSS® statistics for research methods and social science statistics (6th ed.). Thousand Oaks, CA: Sage Publications. Wheelan, C. (2013). Naked statistics: Stripping the dread from data. New York, NY: W. W. Norton & Company.
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In June, 2021, Gallup published an online article titled Public Backs Requiring COVID-19 Vaccine to Attend Scho ...
SDCC Conditions Met for Calculating a Confidence Interval Analysis
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In June, 2021, Gallup published an online article titled Public Backs Requiring COVID-19 Vaccine to Attend School (Links to an external site.) by Jeffrey M. Jones.
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Note: Write as clearly as possible in the given space. Late submission will not be entertained! Exploring Difference Quoti ...
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Note: Write as clearly as possible in the given space. Late submission will not be entertained! Exploring Difference Quotients: In this project, you ...
SDCC Conditions Met for Calculating a Confidence Interval Analysis
Question 1
In June, 2021, Gallup published an online article titled Public Backs Requiring COVID-19 Vaccine to Attend Scho ...
SDCC Conditions Met for Calculating a Confidence Interval Analysis
Question 1
In June, 2021, Gallup published an online article titled Public Backs Requiring COVID-19 Vaccine to Attend School (Links to an external site.) by Jeffrey M. Jones.
According to the article, 61% of U.S. adults who responded to the survey favor requiring College students to be vaccinated in order to attend classes (including classes in fall 2021). A representative random sample of 3,572 adults U.S. adults, aged 18 and older, were surveyed.
Are conditions met for calculating a confidence interval? Support your conclusion mathematically and show your work.
If conditions are met, use your graphing calculator to calculate a 95% confidence interval that estimates the proportion of U.S. adults who favor requiring College students to be vaccinated in order to attend classes. State your results in context.
Question 2
Login and open StatCrunch (directions).
Open your IAT sample data set in StatCrunch (directions)
We will use a 90% confidence interval to estimate the population proportion of participants born-female in our chosen IAT data set.
So, you are tasked with using your IAT sample to calculate a 90% confidence interval that estimates the population proportion of participants born-female in your particular IAT. But, you are missing a piece of information that would allow you to use your graphing calculator to find the confidence interval. What piece of information is missing?
Even though we cannot readily use our graphing calculators, StatCrunch can calculate the confidence interval for us! Use StatCrunch to find the 90% confidence interval for the population proportion of female participants in your particular IAT (directions - opens in a new tab). Highlight and copy everything in your StatCrunch output window and paste it in your response.
Identify the sample proportion (?? )(p^) in the StatCrunch output table. Then determine whether conditions are met for using the confidence interval to estimate the population proportion of female participants in your chosen IAT. Show your work.
If conditions are met, estimate the population proportion of female participants in your particular IAT, and state your conclusion in context. If conditions are not met, explain what a researcher could do so that conditions are met.
Based on your analysis, do you think the population of participants in your chosen IAT are representative of the U.S. population? Explain.
https://www.statcrunch.com/app/index.php?dataid=38...
Business Statistics and Quantitative Analysis - Checking for Quality
Scenario: A venture capitalist has just given you several million dollars to develop your dream product! Explain in detail ...
Business Statistics and Quantitative Analysis - Checking for Quality
Scenario: A venture capitalist has just given you several million dollars to develop your dream product! Explain in detail what this product is and why people would buy it. (Think Steve Jobs and the iPhone - did people really think we needed “smartphones” back in 2007?)Main Post: Now your dream product has gone into production and the manager is asking you, as the statistical expert, to use statistical methods to ensure quality control.1. You will generate a random dataset of N samples of defective proportions by completing the following steps:a) You will start with a random number by combining the last 2 digits of the year in which you were born plus the day of the month in which you were born. For example, if you were born October 3, 1990, your number would be 90 + 3 = 93. (If your number exceeds 100, subtract 100 from the total.) Call this X and it will seed your random number generation. MY DATE OF BIRTH IS 9/4/1978.b) Choose a number of samples, N. (N should be between 5 and 10 samples.)c) In Excel, type =RAND()*X in a cell. Repeat N times. This will generate the proportion of defective products (out of 100) for your N samples.2. Use Excel to create a p-chart for a sample size, 100, and the number of samples, N.3. Write a professional memo to your business/company owner describing the production quality so far and prioritizing any control measures necessary to guarantee high quality products. Address the following items and questions in your professional memo:Describe your product, its use, and societal value. (Humor is encouraged.)Share and summarize your p-chart.What is your Lower Control Limit (LCL) and Upper Control Limit (UCL)?Is the product in control? If not in control, what sample(s) was outside of the limits, i.e., below LCL or above UCL?What measures could be taken now to address the data points that out of control?What recommendations would you suggest to optimize quality in future production?
Statistics Discussion
Propose a policy recommendation for the U.S. to ameliorate and potentially eliminate your transnational crime group. Make ...
Statistics Discussion
Propose a policy recommendation for the U.S. to ameliorate and potentially eliminate your transnational crime group. Make sure your policy recommendation addresses each of the causes and effects of your case study group and who you propose should do them. Be sure to cite sources/facts/statistics/information.
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