A distribution of raw scores from a test administration is normally distributed.The test user wishes to summarize these data using percentiles.A potential problem here is that score differences in the middle area of the distribution
A) may be minimized.
B) may be exaggerated.
C) may not be accurate if the test is "pass/fail."
D) will only be accurate if scored in a timely fashion.

Question

Quizplus · Accepted Answer

In a normally distributed set of scores, differences in the middle of the distribution (around the mean) are smaller in terms of raw scores compared to the tails. When these differences are converted into percentiles, the relative difference between scores can appear larger than it actually is, leading to an exaggeration of differences among scores that are close together in the middle of the distribution.

A Distribution of Raw Scores from a Test Administration Is