If you hypothesize that there will be a difference between test scores from Classroom A and Classroom B, but you do not hypothesize the direction, you have _______.
A)a directional research hypothesis
B)a nondirectional research hypothesis
C)a null hypothesis
D)either a null or research hypothesis

Question

Quizplus · Accepted Answer

A nondirectional research hypothesis simply states that there will be a difference between two groups or conditions, without specifying which group will perform better. This is different from a directional research hypothesis, which predicts a specific direction of difference (e.g. Classroom A will perform better than Classroom B). A null hypothesis states that there is no difference between two groups or conditions, and is usually used as a comparison point to test against the research hypothesis. However, the question specifically asks about a hypothesis that predicts a difference without specifying the direction, which fits the definition of a nondirectional research hypothesis. Therefore, the best answer is B.

If You Hypothesize That There Will Be a Difference Between