# DAX Statistical - CHISQ.INV.RT function

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## Description

Returns the inverse of the right-tailed probability of the chi-squared distribution. If CHISQ.DIST.RT (x ...) = probability, then CHISQ.INV.RT (probability ...) = x.

You can use this function to compare the observed results with the expected ones in order to decide whether your original hypothesis is valid. DAX CHISQ.INV.RT function is new in Excel 2016.

## Syntax

```CHISQ.INV.RT (probability, deg_freedom)
```

## Parameters

Sr.No. Parameter & Description
1

probability

A probability associated with the chi-squared distribution.

2

deg_freedom

The number of degrees of freedom.

## Return Value

Returns the inverse of the right-tailed probability of the chi-squared distribution.

## Remarks

• If any parameter is nonnumeric, CHISQ.INV.RT returns the #VALUE! error value.

• If probability < 0 or probability > 1, CHISQ.INV.RT returns the #NUM! error value.

• If deg_freedom is not an integer, it is truncated.

• If deg_freedom < 1, CHISQ.INV.RT returns the #NUM! error value.

• Given a value for probability, CHISQ.INV.RT seeks that value x such that CHISQ.DIST.RT(x, deg_freedom) = probability. Thus, precision of CHISQ.INV.RT depends on precision of CHISQ.DIST.RT.

• CHISQ.INV.RT uses an iterative search technique. If the search has not converged after 64 iterations, the function returns the #N/A error value.

dax_functions_statistical.htm

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