How to Draw a Box Plot

What is boxplot?

A boxplot is a standardized way of displaying a dataset based on a five-number summary: the minimum, the maximum, the sample median, and the first and third quartiles. In statistics, the boxplot is a method for graphically depicting groups of numerical data through their quartiles.

In Matplotlib, boxplot() is the core function to create box plot. Below are some of the important parameters of the function:

• x: Array or a sequence of vectors. The input data.
• vert: Set as True or False. The default value is True, which displays the boxes vertically.
• labels: Sets the labels for each dataset.
• notch: Set as True or False. the default value is False. If True, the parameter will produce a notched box plot.
• widths: Sets the width of the box.
• patch_artist: Set as True or False. the default value is False. If False, the parameter will produce boxes with the Line2D artist. Otherwise, the boxes will be drawn with Patch artists.

Notice: In the images below, there are some data points outside of the boxes and their whiskers. These data ...