## What is the CHISQ.INV Function?

INV function in Microsoft Excel. 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.

## What does Chisq Inv RT do?

INV. RT function.

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