Unit E: Statistics and Probability

Chapter 1: Statistics


Percentiles


Jared's final exam mark for chemistry and English are in the table below.

Course
Final Exam Mark
Percentile Rank
chemistry
87% 84%
English
79% 92%

Jared wonders which of his marks is better. Jared received a higher exam mark in chemistry but a higher percentile rank in English.

What exactly is the difference between percent and percentile rank?

In this lesson, percentile rank will be used to compare a given value to the other values in a set of data.

By the end of this lesson, you will be able to

  • explain percentile rank
  • explain decisions based on a given percentile rank
  • explain the difference between percent and percentile rank
  • explain the relationship between median and percentile
  • solve a contextual problem that uses percentiles