Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
Chapter Test

Exercise 10 Page 791

The percentile rank of a data value is the percentage of data values that are less than or equal to that value.

40

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 weight of 12.5 kg. We know that 4 values out of the 10 total values are less than or equal to 12.5. 4/10 = 0.4 = 40 % The percentile rank of a weight of 12.5 kg is 40.