For a multiple regression model,the total variation in y can be expressed as:
A) SSE - SSR.
B) SSR - SSE.
C) SSR + SSE.
D) SSR / SSE.

Question

Quizplus · Accepted Answer

The total variation in y can be expressed as the sum of the explained variation (SSR) and the unexplained variation (SSE), therefore the best choice is C. Option A and B are incorrect since they mix up the formula for total variation with the formula for decomposition of total variation. Option D is incorrect since it only provides the ratio between SSR and SSE, but does not express total variation.

For a Multiple Regression Model,the Total Variation in Y Can