Check that the requirements for the theoretical model are met for the data on the number of employees and revenues for the top 25 global research organizations. Are there any outliers? Are there any influential observations?
Answer to relevant QuestionsIf appropriate, test to see whether there is evidence of a positive relationship between the number of sales contacts and sales for the Hendrick Software Sales Company. Use α = 0.05. The R2 for the data on sales and promotional spending for Smith and Klein Manufacturing is 0.83, which is a relatively high value. Does this mean that the least squares regression line is a good model in this case? A college professor has collected data for a random sample of 43 of her students. She has their final semester average marks, and the total number of hours each spent working during the semester. The professor has hired one ...Check the requirements for regression for the data set of student marks on the second test and the final exam in a statistics course, described in Exercise 11. A large company has developed a written test to screen applicants, and the mark on this test has been a good predictor of employee suitability for the graduates that are hired. Because administering the test is ...
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