Python Tutorials · Machine Learning

Percentile

Learn all about Percentile in this comprehensive tutorial.

5 min read advanced

•Percentiles are used in statistics to give you a number that describes the value that a given percent of the values are lower than.

What are Percentiles?

Percentiles are used in statistics to give you a number that describes the value that a given percent of the values are lower than.

Example: Let's say we have an array that contains the ages of every person living on a street.

What is the 75. percentile? The answer is 43, meaning that 75% of the people are 43 or younger.

The NumPy module has a method for finding the specified percentile:

python

import numpyages = 
  [5,31,43,48,50,41,7,11,15,39,80,82,32,2,8,6,25,36,27,61,31]
val_1 = numpy.percentile(ages, 75)print(val_1)

python

import numpyages = 
  [5,31,43,48,50,41,7,11,15,39,80,82,32,2,8,6,25,36,27,61,31]
val_1 = numpy.percentile(ages, 90)print(val_1)

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