Which of the following expresses the difficulty with using percentile ranks to interpret test results?
A) They are based on a ratio scale.
B) Percentiles are based on an interval scale.
C) Their meaning is not easily understood.
D) Percentile ranks do not represent equal intervals.

Question

Quizplus · Accepted Answer

Percentile ranks do not represent equal intervals, which can make it difficult to accurately interpret the differences between scores. For example, the difference between a student who scored at the 90th percentile and a student who scored at the 95th percentile may not necessarily be the same as the difference between a student who scored at the 50th percentile and a student who scored at the 55th percentile.

Which of the Following Expresses the Difficulty with Using Percentile