STDEVPA

Microsoft Office Spreadsheet Functions

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STDEVPA

See Also

Calculates standard deviation based on the entire population given as arguments, including text and logical values. The standard deviation is a measure of how widely values are dispersed from the average value (the mean).

Syntax

STDEVPA(value1,value2, ...)

Value1,value2,...   are 1 to 30 values corresponding to a population. You can also use a single array or a reference to an array instead of arguments separated by commas.

Remarks

  • STDEVPA assumes that its arguments are the entire population. If your data represents a sample of the population, you must compute the standard deviation using STDEVA.
  • Arguments that contain TRUE evaluate as 1; arguments that contain text or FALSE evaluate as 0 (zero). If the calculation must not include text or logical values, use the STDEVP spreadsheet function instead.
  • For large sample sizes, STDEVA and STDEVPA return approximately equal values.
  • The standard deviation is calculated using the "biased" or "n" method.
  • STDEVPA uses the following formula:

    Equation

Example

The example may be easier to understand if you copy it to a blank spreadsheet.

How?

Strength
1345
1301
1368
1322
1310
1370
1318
1350
1303
1299
Formula Description (Result)
=STDEVPA(A2:A11) Standard deviation of breaking strength, assuming only 10 tools are produced (26.05455814)