STDEV.P

Definition

Calculates standard deviation based on the entire population given as arguments (ignores logical values and text).

The standard deviation is a measure of how widely values are dispersed from the average value (the mean).

Sample Usage

Syntax

STDEV.P(number1,[number2],...)

The STDEV.P function syntax has the following arguments:

• Number1     Required. The first number argument corresponding to a population.

• Number2, ...     Optional. Number arguments 2 to 254 corresponding to a population. You can also use a single array or a reference to an array instead of arguments separated by commas.

Remarks

• STDEV.P assumes that its arguments are the entire population. If your data represents a sample of the population, then compute the standard deviation using STDEV.

• For large sample sizes, STDEV.S and STDEV.P return approximately equal values.

• The standard deviation is calculated using the "n" method.

• Arguments can either be numbers or names, arrays, or references that contain numbers.

• Logical values, and text representations of numbers that you type directly into the list of arguments are counted.

• If an argument is an array or reference, only numbers in that array or reference are counted. Empty cells, logical values, text, or error values in the array or reference are ignored.

• Arguments that are error values or text that cannot be translated into numbers cause errors.

• If you want to include logical values and text representations of numbers in a reference as part of the calculation, use the STDEVPA function.

• STDEV.P uses the following formula:

  

  where x is the sample mean AVERAGE(number1,number2,…) and n is the sample size.

In order to use the STDEV.P formula, start with your edited Excellentable:

Then type in the STDEV.P formula in the area you would like to display the outcome:

  

By adding the values you would like to calculate the STDEV.P formula for, Excellentable will generate the outcome: