Question

Of 20 test scores, two are less than or equal to 86. What is the percentile rank of a test score of 86?

Answer 1

Given:

The number of scores, n=20.

The number of test scores less than or equal to 86, N=2.

The percentile rank of 86 is,

$\begin{gathered} \text{Percentile rank=}\frac{Number\text{ of lower scores}}{\text{Total number of scores}}\times100 \\ =\frac{N}{n}\times100 \\ =\frac{2}{20}\times100 \\ =10 \end{gathered}$

Therefore, the percentile rank of 86 is 10.