In an experiment, a scientist wanted to study how a new statistics teaching meth

Question

In an experiment, a scientist wanted to study how a new statistics teaching method affects students' grades. The class was comprised of half juniors and the remaining half senior engineering students. All uniors in the class received the new statistics teaching method while all the seniors in the class received the original teaching method. All students received the same test of competency at the end of the course and performance on the test was used to measure how much students learned. Which is the confounding variable? a. gender b. teaching method C. classification as a junior or senior d. test performance

Explanation / Answer

The confounding variable here would be classification as a junior or senior since in general, it can be assumed that seniors will perform well in the test despite of teaching method.

Option C is correct.

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