alleryStart learning →A test score sits at the 90th percentile. What does that position mean?
A90 percent scored well above it
B90 percent scored at or below it
CIt is 90 points above the mean
DIt was reached by 90 students
Answer & Solution
Correct answer: B. 90 percent scored at or below it
1. A percentile splits a group by the share of people who fall on each side.
2. The 90th percentile has 90 percent of scores at or below it.
3. The remaining 10 percent sit at or above it.
4. A percentile counts people, so it is not a number of points above the mean.
_Source: OpenStax High School Statistics (CC BY 4.0), section 6.2 Using the Normal Distribution_
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