Emeril Company manufactures and sells toaster ovens. To improve the planning and control of shipping expenses, management is trying to determine which of three variables?units shipped, weight shipped, or sales value of units shipped?has the closest relationship with shipping expenses.

Run 3 separate regressions. In each regression use the Shipping Expenses as the dependent variable (Y).

• In regression 1, use the Units Shipped as the independent variable (X).
• In regression 2, use the Weight Shipped as the independent variable (X).
• In regression 3, use the Sales Value of Units Shipped as the independent variable (X).