Which of the following is a statement of equality between sets of variables?

A) research hypothesis
B) null hypothesis
C) nondirectional research hypothesis
D) directional research hypothesis

Sets Of Variables

Groups of variables or elements that are related and can be manipulated, measured, or controlled in research.

Null Hypothesis

A hypothesis in statistical analysis that proposes there is no significant difference or effect, often tested in order to be rejected in favor of an alternative hypothesis.