Why is the confidence interval (SEM) a useful statistic?
A) It indicates the error associated with any score.
B) It provides age range scores.
C) It is a measure of test-retest reliability.
D) It indicates the developmental range of items administered.

Question

Quizplus · Accepted Answer

The confidence interval or SEM (standard error of the mean) is useful because it indicates the amount of error associated with any score. It tells us how much variability we might expect in a sample mean if we were to take multiple samples from the same population. This helps us to interpret the outcomes of statistical analyses and to determine the reliability of our data.

Why Is the Confidence Interval (SEM) a Useful Statistic