Overview In public health, data are often gathered from separate groups in order to describe health-related behavior for a topic of interest. In practice, a larger sample is often surveyed, and then focus groups or interviews can be conducted with a smaller subset of the sample. The quantitative survey data from a larger group helps … Read more
1. Customers can replace 1, 2, 3, or 4 tires at a time for their vehicle at Tire Nation, a nationwide tire shop chain. For customers who have had their tires replaced at Tire Nation, the mean number of tires replaced is =3.67, with a standard deviation of =0.86. Suppose that we will take a random sample of … Read more
Project In this project you will gather data, analyze it using MS Excel, and write your conclusions. The project takes several weeks to complete. The steps are as follows: 1. Gather Data 2. Excel Spreadsheet 3. Introduction 4. Data analysis using MS Excel 5. Analysis 6. Written description of data analysis and conclusions the Instructions … Read more
Competencies In this project, you will demonstrate your mastery of the following competencies: Apply statistical techniques to address research problems Perform regression analysis to address an authentic problem Overview The purpose of this project is to have you complete all of the steps of a real-world linear regression research project starting with developing a … Read more
Look for problems in the data and be prepared to explain why they are problems. Engage in a Discussion with your colleagues and work together to repair the data set by addressing all of the errors. Note that the data set contains a total of 63 errors.
Must format answer in attached template. Must use attachments for data. Must use previous attached assignment for reference. Overview The purpose of this project is to have you complete all of the steps of a real-world linear regression research project starting with developing a research question, then completing a comprehensive statistical analysis, and ending with … Read more
1. Briefly state the general research question that motivates the study. HINT: You must state an interrogative sentence to receive credit. 2. What type of experiment laboratory or field did Sherman et al. (1992) conduct? Discuss the experimental procedure. HINT: Carefully review “Variations in Experimental Context,” (Dixon, Singleton, and Straits, 2019, p.188-193 and see figure … Read more
1. State the main independent variable? How was it manipulated? HINT: Recall, manipulation operations are designed to change the value a variable (Dixon et al. 2019, p. 114-115) and review Sherman et al. (1992), p. 146-147 2. What is the main dependent variable? What are the other dependent variables? Discuss how were they measured. HINT: Outcome Measures
Tables 2 and 3 show output from the regressions needed to use the GoldfeldQuandt test of heteroskedasticity. Table 2 shows the results from the early subsample, and Table 3 shows the results from the later subsample. Use the information in these tables to test whether heteroskedasticity is present. Give some intuition about how the Goldfeld-Quandt … Read more
In this assignment, you will be required to calculate descriptive statistics for each numeric variable in the Heart Rate Dataset Steps Open the Heart Rate Dataset in Excel Sort the quantitative variables by class (e.g., Male at-rest heart rate and Female at-rest heart rate) Use the Excel Data Analysis ToolPak* tools to calculate each of the following … Read more