In order for a percentile score to be useful, you must
A) construct a measurement tool that includes exactly 100 questions.
B) understand what others at the same age are expected to know.
C) compare test-taker's scores on more than one intelligence test.
D) compare the score with those of other people in the same population.

Question

Quizplus · Accepted Answer

Percentile scores are only useful if they are compared with those of other people within the same population. This allows for a meaningful interpretation of the test-taker's performance relative to their peers. Option A is incorrect because percentile scores can be calculated for tests with any number of questions. Option B is not accurate as it is not always necessary to know what others at the same age are expected to know, as tests may measure different abilities or knowledge domains. Option C is also incorrect because percentile scores can be obtained from a single intelligence test, as long as the scores are compared to a representative sample of the population.

In Order for a Percentile Score to Be Useful, You