# Question

Consider the magazine advertising page cost data from Table 12.1.3.

a. Which X variable is the least helpful in explaining page costs? How do you know?

b. Rerun the regression analysis omitting this X variable.

c. Compare the following results without the X variable to the results with the X variable: F test, R2, regression coefficients, t statistics.

a. Which X variable is the least helpful in explaining page costs? How do you know?

b. Rerun the regression analysis omitting this X variable.

c. Compare the following results without the X variable to the results with the X variable: F test, R2, regression coefficients, t statistics.

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