STDEV.P Function

Basic Description

The Excel STDEV.P function calculates the standard deviation of a supplied set of values. The function is new in Excel 2010 and so is not available in earlier versions of Excel. However, the Stdev.P function is simply a new version of the Stdevp function that is available in earlier versions of Excel.

Syntax: STDEV.P( number1, [number2], … )

where the arguments, number1, [number2], etc, are between 1 and 255 numerical values or references to cells containing numbers. Note that the Stdev.P function is used when calculating the standard deviation for an entire population. If you are calculating the standard deviation of an sample population, you need to use the Stdev.S function. Note also, that the Stdev.P function ignores text values and logical values if these are supplied as part of an array. If you want a function that includes text and logical values in the calculation, consider using the Stdevpa function.


Stdev.P Function Example


Stdev.P Function Errors

If you get an error from the Excel Stdev.P function this is likely to be one of the following:


Occurs if none of the values supplied to the function are numeric

(Note that text representations of numbers, that are supplied as a part of an array, are not interpreted as numeric values by the Stdev.P function)

#VALUE! Occurs if any values that are supplied directly to the Stdev.P function are text values that cannot be interpreted as numeric values.

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