According to the current textbooks, percentile is the content of high school mathematics textbooks.

Quantile, also known as quantile, refers to dividing the probability distribution range of a random variable into several equal numerical points, such as median (i.e. dichotomy), quartile and percentile. 2. The common classifications of quantiles are binary, quartile and percentile. For a finite set of numbers, we can sort all the observed values and find the middle one as the median. If there are even numbers of observations, the median is not unique, and the average of the two intermediate values is usually taken as the median, that is, dichotomy. Quartile is a kind of quantile in statistics, that is, all values are arranged from small to large and divided into four equal parts, and the values at the three dividing points are quartiles. Percent, a statistical term. If a group of data is sorted from small to large and the corresponding cumulative percentile is calculated, the data value corresponding to a percentile is called the percentile of the percentile. Used in education statistics, such as showing exam results, it is called PR value.