VARX.P

Returns the variance of the entire population.

Syntax

VARX.P(<table>, <expression>)

Parameters

TermDefinition
tableAny DAX expression that returns a table of data.
expressionAny DAX expression that returns a single scalar value, where the expression is to be evaluated multiple times (for each row/context).

Return value

A number with the variance of the entire population.

Exceptions

Remarks

  1. VARX.P evaluates <expression> for each row of <table> and returns the variance of <expression> assuming that <table> refers to the entire population.. If <table> represents a sample of the population, then compute the variance by using VARX.S.
  2. VARX.P uses the following formula:∑(x – x̃)²/nwhere x̃ is the average value of x for the entire populationand n is the population size
  3. Blank rows are filtered out from columnName and not considered in the calculations.
  4. An error is returned if columnName contains less than 2 non-blank rows

This DAX function may return different results when used in a model that is deployed and then queried in DirectQuery mode. For more information about semantic differences in DirectQuery mode.

Example

The following example shows the formula for a calculated column that calculates the variance of the unit price per product, when the formula is used in the Product table

=VARX.P(InternetSales_USD, InternetSales_USD[UnitPrice_USD] –(InternetSales_USD[DiscountAmount_USD]/InternetSales_USD[OrderQuantity]))

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