What are the assumptions of the simple linear regression model?
Answer to relevant QuestionsIs it possible that a sample correlation of 0.51 between two variables will not indicate that the two variables are really correlated, while a sample correlation of 0.04 between another pair of variables will be ...A regression analysis was carried out of returns on stocks (Y) versus the ratio of book to market value (X). The resulting prediction equation is Y = 1.21 + 3.1X (2.89) where the number in parentheses is the standard error ...Results of a study reported in Financial Analysts Journal include a simple linear regression analysis of firms’ pension funding (Y) versus profitability (X). The regression coefficient of determination is reported to be r2 ...Conduct the F test for the existence of a linear relationship between the two variables in problem 10–11. In problem For the American Express example, give a 95% prediction interval for the amount charged by a member who traveled 5,000 miles. Compare the result with the one for x = 4,000 miles.
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