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PercentileRank
Your score, the mean, and the standard deviation — see your percentile rank in the bell curve.
85th percentile means you scored higher than 85% of test-takers — NOT that you got 85% of the questions right. Two different numbers.
Percentile rank
84.1%
Your score is 1 standard deviations from the mean.
Assumes a normal (bell-curve) distribution — accurate for most large standardised tests.
What you entered
Z-score: how many std deviations from the mean
(82 − 72) ÷ 10= 1.000Convert Z-score to percentile via normal CDF
Φ(1.000) × 100= 84.1%Result
Percentile rank: 84.1%
Your score is 1 standard deviations from the mean.