1. If we fail to reject the null hypothesis when running the global F-test, we next need to look at the important t-tests to see if the interaction or the quadratic terms work.

If we fail to reject the null hypothesis when running the global F-test, we next need to look at the important t-tests to see if the interaction or the quadratic terms work.

True or False?

2.

If the relationship between y and x₁ depends on the value of x₂, there is a curvilinear relationship.

True or False?