STDEV Function

Basic Description

The Excel STDEV function calculates the sample standard deviation of a supplied set of values.

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

where the arguments, number1, [number2], etc, are between 1 and 255 numerical values, arrays of values, or references to cells containing numbers. These must provide at least two numerical values to the function. If you are using Excel 2007 a later version of Excel you can enter up to 255 number arguments to the function. However, in Excel 2003, the function can only accept up to 30 number arguments.

Note that the Stdev function is used when calculating the standard deviation for a sample of a population (eg. if your data set records the individual heights of a sample of UK males). If you are calculating the standard deviation of an entire population, you need to use the Stdevp function. Note also, that the Stdev 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 Stdeva function.

 

Stdev Function Example

 

Common Errors

#DIV/0!

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 function)

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

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