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Cartoon: No tables needed when z = 2

A cartoon to to help students remember that about 95% of data in a symmetric histogram lies within 2 standard deviations of the mean. Cartoon by John Landers (www.landers.co.uk) based on an idea from Dennis Pearl (The Ohio State University). Free to use in the classroom and on course web sites.
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Date Of Record Creation 2010-03-23 14:27:41
Date Of Record Release 2010-03-23 14:27:41
Date Last Modified 2010-03-23 14:27:41
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Author Name John Landers
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