There are situations where a set of explanatory variables forms a logical group.The test to determine whether the extra variables provide enough extra explanatory power to warrant inclusion in the equation is referred to as the:
A)complete F-test
B)reduced F-test
C)partial F-test
D)reduced t-test

Question

Quizplus · Accepted Answer

The partial F-test is used when a group of explanatory variables are logically related and we want to test whether the group as a whole is significant in explaining the response variable. It is also known as the extra sum of squares F-test. The complete F-test is used to test the overall significance of the entire set of explanatory variables, while the reduced F-test is used for testing whether a subset of variables can be eliminated from the model. The reduced t-test is used to test the significance of a single variable in a regression model. Therefore, the best choice for the given scenario is the partial F-test.

There Are Situations Where a Set of Explanatory Variables Forms