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January 25, 2015

January 25, 2015

Posted by **mike** on Monday, April 29, 2013 at 7:15pm.

- statistics -
**PsyDAG**, Tuesday, April 30, 2013 at 2:30pmThe Range Rule

The range rule tells us that the standard deviation of a sample is approximately equal to one fourth of the range of the data. In other words s = (Maximum – Minimum)/4. This is a very straightforward formula to use, and should only be used as a very rough estimate of the standard deviation.

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