Question: The following estimated equation was obtained by ordinary least squares regression using quarterly data for 1960 to 1979 inclusive (T = 80).
Standard errors are in parentheses, the explained sum of squares was 112.5, and the residual sum of squares was 19.5.
(a) Which of the slope coefficients are significantly different from zero at the 5% significance level?
(b) Calculate the value of R2 for this regression.
(c) Calculate the value of R2 ("adjusted R2").