Consider the following scenario. Senior management wants you to analyze which quarter experiences the highest customer demand, controlling for macroeconomic conditions. You regress sales on quarter dummies and a measure of macroeconomic consumer confidence in Stata, and get the following results

Source SS df MS Number of obs = 48 F (4, 43) = 281.60 Model 33158.0011 4 8289.50028 Prob > F = 0.0000 Residual 1265.78879 43 29.4369486 R-squared 0.9632 Adj R-squared 0.9598 Total 34423.7899 47 732.421062 Root MSE 5. 4256 Sales Coef. Std. Err. t P>| t [95% Conf. Interval] Quarter2 7.38508 2.215254 3.33 0.002 2.917596 11. 85257 Quarter3 60. 06216 2.220939 27.04 0.000 55.58321 64. 54111 Quarter4 51.22804 2.220067 23.07 0.000 46.75085 55.70523 Consumer Sentiment -3.371479 2.588669 -1.30 0.200 -8.592028 1.84907 Cons 12.31175 2.019874 6.10 0.000 8. 238283 16.38521