# CHISQ.INV

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

The chi-squared distribution is commonly used to study variation in the percentage of something across samples, such as the fraction of the day people spend watching television.

## Syntax

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

### Parameters

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

Probability | A probability associated with the chi-squared distribution. |

Deg_freedom | The number of degrees of freedom. |

## Return value

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

## Remarks

If argument is nonnumeric, CHISQ.INV returns the #VALUE! error value.

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

If deg_freedom is not an integer, it is rounded.

If deg_freedom < 0 or deg_freedom > 10^10, CHISQ.INV returns the #NUM! error value.

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

## Example

Formula | Description | Result |
---|---|---|

= CHISQ.INV(0.93,1) | Inverse of the left-tailed probability of the chi-squared distribution for 0.93, using 1 degree of freedom. | 5.318520074 |

= CHISQ.INV(0.6,2) | Inverse of the left-tailed probability of the chi-squared distribution for 0.6, using 2 degrees of freedom. | 1.832581464 |

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