The practical significance of a research finding usually is best determined by
A) tests of statistical significance.
B) tests of statistical power.
C) confidence intervals.
D) effect sizes.

Question

Quizplus · Accepted Answer

Effect sizes directly measure the magnitude of the difference between groups or the strength of a relationship, providing a clear indication of the practical significance of research findings, unlike statistical significance, power, or confidence intervals, which do not directly address the practical importance of the results.

The Practical Significance of a Research Finding Usually Is Best