In an experimental study,men with erectile disorder received either Viagra or a placebo.In this study,the drug dosage (none versus peak dose)was the

Question

Quizplus · Accepted Answer

The drug dosage (none versus peak dose) is being intentionally manipulated by the researchers and is therefore the independent variable. The outcome being measured, erectile function after taking the drug, is the dependent variable. A confounding variable would be an extraneous factor that is not controlled for and could potentially affect the results, but this is not mentioned in the question. Standard deviation is a statistical measure of variability and is not relevant in determining the variables in the study.

In an Experimental Study,men with Erectile Disorder Received Either Viagra