Which of the following variables might be a proxy variable for the confounding factor of cognitive ability in a sample of workers and their ability to generate sales?
A) Test scores
B) Past sales records
C) Tenure at the company
D) Age

Question

Quizplus · Accepted Answer

Test scores are a common measure of cognitive ability and may serve as a reliable proxy variable for cognitive ability in this sample. Past sales records, tenure at the company, and age are not necessarily related to cognitive ability and therefore would not be good proxy variables for the confounding factor.

Which of the Following Variables Might Be a Proxy Variable