Exhibit 13-6

Below you are given a partial computer output based on a sample of 16 observations.

Constant X1 X2

Coefficient

 12.924 -3.682 45.216

Standard Error

4.425

2.630 12.560

1. Refer to Exhibit 13-6. The interpretation of the coefficient of X1 is that
   1. a one unit change in X1 will lead to a 3.682 unit decrease in Y
   2. a one unit increase in X1 will lead to a 3.682 unit decrease in Y when all other variables are held constant
   3. a one unit increase in X1 will lead to a 3.682 unit decrease in X2 when all other variables are held constant
   4. It is impossible to interpret the coefficient.
2. Refer to Exhibit 13-6. The test statistic used to determine if there is a relationship between X2 and y a. -1.4

b. 0.2 c. 3.60 d. 5