The best way to determine whether a statistically significant difference in two means is of practical importance is to
A) find a 95% confidence interval and notice the magnitude of the difference.
B) repeat the study with the same sample size and see if the difference is statistically significant again.
C) see if the p-value is extremely small.
D) see if the p-value is extremely large.

Question

Quizplus · Accepted Answer

Finding a 95% confidence interval and noticing the magnitude of the difference helps in understanding the practical importance of the difference between two means. It provides a range within which the true difference is likely to lie with a certain level of confidence, thus giving insight into the practical significance of the findings.

The Best Way to Determine Whether a Statistically Significant Difference