Which of the following sentences best describes a covariate?
A)A variable that is not able to be measured directly.
B)A variable that shares some of the variance of another variable in which the researcher is interested.
C)A variable that correlates highly with the dependent variable.
D)A pair of variables that share exactly the same amount of variance of another variable in which the researcher is interested.

Question

Quizplus · Accepted Answer

A covariate is a variable that is related to both the independent and dependent variables and shares some of the variance of the dependent variable. Option A is incorrect because a covariate can be measured directly. Option C is incorrect because a variable that correlates highly with the dependent variable is not necessarily a covariate. Option D is incorrect because it is not necessary for two variables to share exactly the same amount of variance to be considered a covariate.

Which of the Following Sentences Best Describes a Covariate