Excel STDEV.P Function

Last Updated : 11 Mar, 2026

The STDEV.P function in Excel calculates the standard deviation for an entire population and ignores logical values and text. It is useful for financial analysis, such as measuring income variation and portfolio risk.

STDEV.P Function

The STDEV.P capability utilises the accompanying contentions:

  1. Number1 (required argument): This is the main number contention that relates to a populace.
  2. Number2 (required argument): This is another number contention that relates to the populace.

The formula for the STDEV.P function:

=STDEV.P(number1,[number2],…)

Note:

  • The given contentions should give no less than two numeric qualities to the capability.
  • The contentions ought to be somewhere in the range of 1 and 255 numeric qualities, varieties of values, or references to cells containing numbers.
  • Contentions can either be numbers or names, clusters, or references that contain numbers.
  • The capability is involved when we need to work out the standard deviation for an entire populace. On the off chance that we are computing the standard deviation of an example of a populace, we want to utilize the STDEV.S capability.

STDEV.P Function in Excel

As a worksheet capability, STDEV.P can be placed as a component of an equation in a cell of a worksheet. To comprehend the purposes of the capability, let us think about a model:

Example 1

Assume we are given a record of a business' month-to-month marketing projections throughout recent years, as displayed beneath:

Month-wise-dataset
Monthly sales data for an entire year used to calculate population standard deviation using STDEV.P.

Step 1: For the standard deviation, the equation utilized is,

Function-for-standard-deviation
Typing the formula =STDEV.P(A1:A12) to calculate the standard deviation of the sales values in range A1 to A12.

Step 2: We obtain the outcomes underneath.

Output showing the standard deviation of the entire data set calculated using STDEV.P.

The condition utilized for this is:

S = \sqrt{\frac{\sum(x_i -x)}{n-1}}

Where,

  • x takes on each worth in the set;
  • x is the normal (factual mean) of the arrangement of values;
  • n is the number of values.

Things to recollect about the STDEV.P Function

  1. #DIV/0! error: Happens assuming none of the qualities that are provided to the capability are numeric. Message portrayals of numbers that are given as a piece of an exhibit are not perceived as numeric qualities by the STDEV.P capability.
  2. #VALUE! error: Happens assuming that any of the given qualities given straightforwardly to the STDEV capability are text esteems that can't be deciphered as numeric qualities.
  3. The STDEV.P capability is utilized in working out the standard deviation for a whole populace. On the off chance that we wish to compute the standard deviation of an example populace, we want to utilize the STDEV.S capability.
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