Which of the following statements best reflects statistical power?
A) The ability of a statistical test to detect a difference when one genuinely exists.
B) The ability of a statistical test to yield appropriate participant numbers.
C) The ability of a statistical test to successfully identify the confidence intervals of a sample mean.
D) The ability of a statistical test to apply a meaningful effect.

Question

Quizplus · Accepted Answer

Statistical power refers to the ability of a statistical test to detect a difference when one genuinely exists. In other words, it is the likelihood that a statistical test will correctly reject the null hypothesis when the alternative hypothesis is true. This is often determined by factors such as the sample size, effect size, and significance level. Choices B, C, and D do not fully reflect the concept of statistical power.

Which of the Following Statements Best Reflects Statistical Power