Violation of the assumption that samples are randomly selected affects researchers' ability to:
A) generalize the results of a study beyond the sample.
B) differentiate between-groups variance and within-groups variance.
C) meet the homogeneity of variance assumption.
D) reject the null hypothesis.

Question

Quizplus · Accepted Answer

Random selection of samples is necessary for ensuring that the sample is representative of the population. Violation of this assumption means that the sample may not be representative and therefore the results cannot be generalized beyond the sample. This affects the external validity of the study.

Violation of the Assumption That Samples Are Randomly Selected Affects