The percentile rank of a data value is the percentage of data values that are less than or equal to that value.
60
Practice makes perfect
Percentiles separate data sets into 100 equal parts. The percentile rank of a data value is the percentage of data values that are less than or equal to that value. Let's find the percentile rank of a score of 80. We know that 6 values out of the 10 total values are less than or equal to 80.
6/10 = 0.6 = 60 %
The percentile rank of a score of 80 is 60.
