Which of the following tests is used to determine whether an additional variable makes a significant contribution to a multiple regression model?
A)a t test
B)a Z test
C)an F test
D)a chi-square test

Question

Quizplus · Accepted Answer

An F test is typically used to determine whether an additional variable makes a significant contribution to a multiple regression model. It considers the change in the sum of squares of the model with and without the additional variable, and compares it to the expected sum of squares if the additional variable did not make a significant contribution. The other tests listed are not typically used for this purpose.

Which of the Following Tests Is Used to Determine Whether