If you conduct a study and predict that X causes Y, then X is the ____.
A) internal variable
B) external variable
C) independent variable
D) dependent variable

Question

Quizplus · Accepted Answer

In a study, the independent variable is the one that is manipulated or changed by the researcher in order to observe its effect on the dependent variable. Therefore, if you predict that X causes Y, X must be the independent variable (choice C). The internal variable (choice A) refers to a variable that is not being studied but that could potentially affect the relationship between X and Y. The external variable (choice B) is a variable that is outside of the study that could affect the results but is not being controlled by the researcher. The dependent variable (choice D) is the variable that is being measured and is believed to be affected by the independent variable.

If You Conduct a Study and Predict That X Causes