The Excel STDEV.P function calculates the standard deviation for a sample set of data. STDEV.P calculates standard deviation using the "n" method, ignoring logical values and text.
Get standard deviation of population
Estimated standard deviation
=STDEV.P (number1, [number2], ...)
number1 - First number or reference in the sample.
number2 - [optional] Second number or reference.
The STDEV.P function calculates the standard deviation for a sample set of data. Standard deviation is a measure of how much variance there is in a set of numbers compared to the average (mean) of the numbers. The STDEV.P function is meant to estimate standard deviation for an entire population. If data represents a sample, use the STDEV.S function.
Note: STDEV.P replaces the STDEVP function, with identical behavior. Although STDEVP still exists for backwards compatibility, Microsoft recommends that people use the newer STDEV.P function instead.
Standard Deviation functions in Excel
The table below summarizes the standard deviation functions provided by Excel.
To calculate coefficient of variation (CV) in Excel you can use the STDEV.P function or STDEV.S function with the AVERAGE function. In the example shown, the the formula in I5 is:
where H5 contains...
To calculate the standard deviation of a data set, you can use the STEDV.S or STEDV.P function, depending on whether the data set is a sample, or represents the entire population. In the example shown, the formulas in...