Math with Bad DrawingsCartoon Archive

Why Not to Trust Statistics: Median

July 13, 2016Original blog post

An investment fund brags of a median gain of 8% a year, but its losses are far bigger than its gains.

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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.

Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2016-07-13-why-not-to-trust-statistics--median/ (CC BY-NC 4.0)
Transcript

Median: "So, why should I invest with you?" "Well, not to brag, but my fund has a median gain of 8% per year!"

[Bar chart of yearly returns: small gains around +8%, huge losses below −10%]

Topics
Statistics › Statistical LiteracyStatistics › MedianStatistics › Data Displays › Bar Graphs
Level
Middle SchoolHigh SchoolAP Statistics
Themes
Money & ShoppingWork & JobsVisual Explanations