Standard Deviation and Variance Calculator

This simple tool will calculate the variance and standard deviation of a set of data. Simply enter your data into the textbox below, either one score per line or as a comma delimited list, and then press "Calculate".

Note: If you want to calculate the pooled variance of two samples, then you can use our pooled variance calculator.


Population or Sample

Remember, if your data represents a whole population, then you need to select Population above.


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