Which of the following is a nondirectional test?

A) a one-tailed test
B) a two-tailed test
C) a research hypothesis
D) all hypotheses

Nondirectional Test

A hypothesis that does not predict the direction of the difference or association between variables, only that there is a difference.

One-Tailed Test

A statistical test that determines the probability of the observed data under the assumption that one end of the probability distribution is scrutinized.

Two-Tailed Test

A statistical hypothesis test in which the critical area of a distribution is two-sided and tests whether a sample is either greater than or less than a certain range of values.