If you do not predict 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

If you do not predict the direction of the relationship between two variables, you should use a two-tailed test. In a two-tailed test, you are testing for the possibility of both positive and negative relationships, unlike a one-tailed test which focuses only on one direction of the relationship. ANOVA and Cohen's d are not appropriate tests for determining the direction of a relationship.

If You Do Not Predict a Relationship Between Two Variables