If you posit a relationship between two variables as being either positive or negative, what type of test should you use?
A) Two-tailed
B) ANOVA
C) One-tailed
D) Cohen's d

Question

Quizplus · Accepted Answer

When you posit a relationship between two variables as being either positive or negative, you should use a one-tailed test. A one-tailed test allows you to test for significance in only one direction and is used when you have a clear hypothesis about the directionality of the relationship between the two variables.

If You Posit a Relationship Between Two Variables as Being