The MBA program surveyed the catastrophe that was his fall 2017 intake.His 257 admitted students had performed miserably and he needed to determine why.He built a regression model to predict their overall class average after their first semester based on these factors that weighed heavily in their admission process: undergraduate GPA, GMAT score, years of professional employment, shoe size, TOEFL score, and 40 yard dash.How many degrees of freedom should the F test denominator have?
A)251
B)263
C)257
D)250

Question

Quizplus · Accepted Answer

The degrees of freedom for the F test denominator in a regression model are calculated as the total number of observations minus the number of parameters estimated (including the intercept). Here, there are 257 students (observations) and 6 factors plus an intercept (7 parameters in total), so the degrees of freedom are 257 - 7 = 250.

The MBA Program Surveyed the Catastrophe That Was His Fall