As the sample size used in a research project increases,
A) statistical significance also increases.
B) the effect size also increases.
C) Type I errors also increase.
D) statistical significance decreases.

Question

Quizplus · Accepted Answer

As the sample size in a research project increases, the statistical power of the study increases, making it easier to detect a true effect if one exists. This means that the likelihood of achieving statistical significance (p-value below a certain threshold, often 0.05) increases, assuming the effect size remains constant. The effect size itself does not inherently increase with sample size, nor does the increase in sample size directly increase Type I errors (false positives) or decrease statistical significance.

As the Sample Size Used in a Research Project Increases