# VARX.P

**Applies to:**
Calculated column
Calculated table
Measure
Visual calculation

Returns the variance of the entire population.

## Syntax

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

### Parameters

Term | Definition |
---|---|

table | Any DAX expression that returns a table of data. |

expression | Any 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.

## Remarks

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.

VARX.P uses the following formula:

∑(x - x̃)

^{2}/nwhere 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 rowsThis 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 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]))
```