Friday, September 7, 2018

Waves ........the bell curve......m = 0..slope is zero....half way through...


68–95–99.7 rule - Wikipedia

https://en.wikipedia.org/wiki/68–95–99.7_rule
In statistics, the 6895–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within a band around the ...

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