A confounding variable is problematic for an experimental design because it:
A)increases the variability in the data.
B)increases the internal reactivity of the experiment.
C)makes possible alternative explanations for the results.
D)eliminates alternative explanations for the results.

Question

Quizplus · Accepted Answer

Confounding variables introduce alternative explanations for the results, making it difficult to determine if the independent variable caused the observed changes in the dependent variable or if another variable (the confounding variable) was responsible. This reduces the internal validity of the experiment.

A Confounding Variable Is Problematic for an Experimental Design Because