Selecting and Recruiting Subjects Increasing the sample size
A)decreases confounding.
B)increases effect size.
C)increases internal validity.
D)increases statistical power.

Question

Quizplus · Accepted Answer

Increasing the sample size increases statistical power, which means that the study is more likely to detect a significant difference or effect if one exists. This can be helpful in increasing the external validity of the study, as it reduces the likelihood of a Type II error (failing to detect a significant effect when one truly exists). However, it does not necessarily decrease confounding or increase internal validity, and it may or may not increase effect size depending on the specific research question and design.

Selecting and Recruiting Subjects Increasing the Sample Size