Consider the results of a study that suggest more frequent marijuana use is associated with a higher number of hours of TV viewing.If the study tests whether both the frequency of marijuana use and the number of hours of TV viewing are predicted by whether respondents are employed,the study has tested whether employment
A)is actually the dependent variable.
B)has a practical level of significance.
C)is a confounding variable.
D)is a suppressor variable.

Question

Quizplus · Accepted Answer

Employment is a confounding variable because it is related to both the frequency of marijuana use and the number of hours of TV viewing. It could be that individuals who are employed have less free time to smoke marijuana and watch TV, which would explain the association between these two variables. Therefore, employment should be controlled for in the analysis to determine the true relationship between marijuana use and TV viewing.

Consider the Results of a Study That Suggest More Frequent