Standard Deviation


Introduction

The standard deviation is a statistical measure of the precision in a series of repetitive measurements. It is calculated from:

Where s in standard deviation, N is the number of datum, xi is each individual measurement, and x bar is the mean of all measurements. The value xi - x bar is called the residual for each measurement.


Related topics:


Further Information


/chem-ed/data/std-dev.htm, updated 10/14/96

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