Sample Standard Deviation Formula

A sample standard deviation is the estimation of a sample from a larger population. Shown here the sample standard deviation formula to calculate the sample SD of a given set of data. Just replace the variables in the SD formula with the values of your sample set and do the operations to get the result. To do the calculation you need to have the values of the following sample dataset, mean value of the sample data set, size of the sample data set.

SD Formula

Sample Deviation


S = Sample Standard Deviation
xi = Sample Data Set
x = Mean Value of the Sample Data Set
N = Size of the Sample Data Set

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Sample standard deviation is significant in the measure of variation or spread in a set of data. Feel free to refer this sample standard deviation formula for your examination purpose.

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