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The standard deviation calculator or SD calculator provided here will permit you to easily calculate the standard deviation or the variability for a given set of numbers. For more information about this important topic in statistics please visit What is Standard Deviation.
The numbers included in the calculation are for illustration. You may enter any number except zero for the calculation. The calculator will take up to 25 numbers to calculate the standard deviation. The example numbers show how to use less than 25 data points. If you want to use less than 25 numbers, put zero in the spots that are not being used (end only). You must then change n to the number of data points that you are using. The example is set up for 20 data points.
This standard deviation calculator provides a means for calculating the sample standard deviation. It is an important measure of the variability of a set of data. This calculator can be used for up to 25 data points. Follw these link for help in explaining standard deviation and a what is standard devisation