## Sample Standard Deviation

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In these calculations, N represents the number of measurements and X1, X2, …, Xn represent the measured values.

The first step is to calculate the mean (`mu`), the average of all the measurements.

`mu = ((sum X_i)) / N`

The sample standard deviation (`S_(Sampl\e)`) is calculated as follows:

`S_(sampl\e) = sqrt (((sum(X_i - mu)^2))/((n-1)))`