Stephanie conducts an experiment to learn if brunettes have more fun.She has three brunette female friends and three blonde female friends go to the same party and record how many times they are asked to dance.When Stephanie discovers that two of the three brunette friends in her experiment are terrible dancers,she realizes that her results may be invalid due to a
A) poor manipulation.
B) confounding variable.
C) fourth variable.
D) lack of redheads in the study.

Question

Quizplus · Accepted Answer

A confounding variable, in this case the ability to dance, could potentially affect the outcome of the study and make it difficult to determine if hair color is actually related to how often someone is asked to dance.

Stephanie Conducts an Experiment to Learn If Brunettes Have More