Identify the variable of interest in the study.
-A quality control specialist compares the output from a machine with a new lubricant to the output of machines
With the old lubricant.
A)The difference between the measured outputs of a machine using each type of lubricant
B)The number of machines tested
C)Whether the new lubricant is more cost-effective than the old lubricant

Question

Quizplus · Accepted Answer

The variable of interest is the difference in output between machines using the new lubricant and those using the old lubricant, as this directly measures the effect of the lubricant change.

Identify the Variable of Interest in the Study