# Question: Consider the magazine advertising page cost data from Table 12 1 3 a

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.

## Answer to relevant Questions

Consider the interest rates on securities with various terms to maturity, shown in Table 12.5.18. a. Find the regression equation to predict the longterm interest rate (Treasury bonds) from the two shorter-term rates. b. ...The unemployment rate can vary from one state to another, and in 2008 the standard deviation was 1.2% for the percent unemployed, which averaged 5.3% at the time. Table 12.5.5 shows these unemployment rates together with two ...1. What are the “obvious conclusions” from the hypothesis tests in the regression output? 2. Look through the data. Do you find anything that calls into question the regression results? Perform further analysis as ...Fill in the blanks, using either affect or effect. a.* The amount of overtime and the time of day had a significant __________ on accidents in the workplace. b.* The amount of overtime and the time of day significantly ...For each of the following, say whether it is stationary or nonstationary: a. Autoregressive process. b. Random walk. c. Moving-average process. d. ARMA process.Post your question