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VAR.P

  • Стаття

Applies to: Calculated column Calculated table Measure Visual calculation

Returns the variance of the entire population.

Syntax

VAR.P(<columnName>)

Parameters

Term Definition
columnName The name of an existing column using standard DAX syntax, usually fully qualified. It cannot be an expression.

Return value

A number with the variance of the entire population.

Remarks

  • VAR.P assumes that the column refers the entire population. If your data represents a sample of the population, then compute the variance by using VAR.S.

  • VAR.P uses the following formula:

    ∑(x - x̃)2/n

    where x̃ is the average value of x for the entire population

    and n is the population size

  • Blank rows are filtered out from columnName and not considered in the calculations.

  • An error is returned if columnName contains less than 2 non-blank rows

  • This function is not supported for use in DirectQuery mode when used in calculated columns or row-level security (RLS) rules.

Example

The following example shows the formula for a measure that estimates the variance of the SalesAmount_USD column from the InternetSales_USD table, for the entire population.

= VAR.P(InternetSales_USD[SalesAmount_USD])