In Problem 14.4 on page 583, you used sales and number of orders to predict distribution costs

Question:

In Problem 14.4 on page 583, you used sales and number of orders to predict costs at a mail-order catalog business (stored in WareCost). Use the results from that problem.
a. At the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the most appropriate regression model for this set of data.
b. Compute the coefficients of partial determination, r2y1.2 and r2y2.1, and interpret their meaning. Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...