A regression analysis involved 17 independent variables and 697 observations. The critical value of t for testing the significance of each of the independent variable's coefficients will have a. 696 degrees of freedom b. 713 degrees of freedom c. 679 degrees of freedom d. 714 degrees of freedom

C

Explanation:

In regression, the critical value t for testing the significance of variable's coefficients has the number of degrees of freedom formula which is (number of observations) - (number of independent variables + 1).

Where number of observations = 697

number of independent variables = 17

Hence, in this case we have

697 - (17+1) = 697 - 18 = 679 degrees of freedom.