# CHISQ.INV.RT

### Definition

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

If probability = CHISQ.DIST.RT(x,...), then CHISQ.INV.RT(probability,...) = x. Use this function to compare observed results with expected ones in order to decide whether your original hypothesis is valid.

### Sample Usage

### Syntax

CHISQ.INV.RT(probability,deg_freedom)

The CHISQ.INV.RT function syntax has the following arguments:

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

Deg_freedom Required. The number of degrees of freedom.

### Remarks

If either argument 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.

### In order to use the Chisq.Inv.Rt formula, start with your edited Excellentable:

### Then type in the Chisq.Inv.Rt formula in the area you would like to display the outcome:

### By adding the values you would like to calculate the CHISQ.INV.RT formula for, Excellentable will generate the outcome: