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.
Standard deviation in Excel
Standard deviation is a measure of how much variance there is in a set of numbers compared to the average (mean) of the numbers. To calculate standard deviation in Excel, you can use one of...
Coefficient of variation is a measure of relative variability of data with respect to the mean. It represents a ratio of the standard deviation to the mean, and can be a useful way to compare data series when means are...