A variable that is assumed or excluded from a research study is a(n)_____ variable.
A) criterion
B) predictor
C) mediator
D) moderator
E) extraneous

Question

Quizplus · Accepted Answer

An extraneous variable is a variable that is not the focus of the study, but can potentially impact the relationship between the independent and dependent variable. It is either assumed (not explicitly measured or controlled) or excluded (deliberately controlled) from the study. The other options - criterion, predictor, mediator, and moderator - are all types of variables that are explicitly measured or manipulated in a study.

A Variable That Is Assumed or Excluded from a Research