MS Excel - Excel CHISQ.INV.RT() function
Description
The CHISQ.INV.RT() function is used to get 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.
Version: Excel 2013
Syntax
CHISQ.INV.RT(probability,deg_freedom)
Parameters
| Name | Description | Data Type | Required/ Optional |
|---|---|---|---|
| Probability | A probability associated with the chi-squared distribution. | number | Required |
| Deg_freedom | The number of degrees of freedom. | number | Required |
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.
Example : Excel CHISQ.INV.RT() function
The following worksheet shows the inverse of the one-tailed probability of the chi-squared distribution.
| Data | Description |
|---|---|
| 0.06 | Probability associated with the chi-squared distribution |
| 10 | Degrees of freedom |
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Source:http://www.w3resource.com/excel/excel-chisq-dot-inv-dot-rt-function.php
