This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionBox Plot Picture.png
English: This is an illustration of a box plot. In the drawing, numbers on a number line are going from 1 to 15. A box plot above the number line has a minimum of 2, a lower quartile of 3.5, a median of 6.1, an upper quartile of 9.6, and a maximum of 15. They are all based on unordered data near the bottom: 2, 4, 3, 5.7, 7.2, 6.5, 15, 12. I created the drawing using Microsoft PowerPoint.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Captions
This is a drawing of a box plot. The graph has sections with the minimum, lower quartile, median, upper quartile, and maximum. They are all based on data near the bottom. I created the drawing using PowerPoint.