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 used to test the overall significance of a multiple regression model, and it is also used to test whether an additional variable makes a significant contribution to the model. T tests and z tests are used to test individual coefficients in the model, and a chi-square test is used for categorical data analysis.

Which of the Following Tests Is Used to Determine Whether