The variability in an experiment
A) Can only occur between groups
B) Can only occur within the subjects in a group
C) Can occur both between groups and within the subjects of a group
D) Indicates that a sample has been improperly selected

Question

Quizplus · Accepted Answer

Variability can occur both between groups and within the subjects of a group. Variability between groups is known as intergroup variability, while variability within subjects is known as intrasubject variability. Measuring both types of variability is important for understanding the results of an experiment.

The Variability in an Experiment