Source:http://www.w3resource.com/excel/excel-chisq-dot-inv-function.php
MS Excel - Excel CHISQ.INV() function
Description
The CHISQ.INV() function is used to get 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.
Version: Excel 2013
Syntax
CHISQ.INV(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 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 truncated.
- If deg_freedom < 1 or deg_freedom > 10^10, CHISQ.INV returns the #NUM! error value.
Example - 1 : Excel CHISQ.INV() function
In the following example the inverse of the left-tailed probability of the chi-squared distribution for 0.75, using 1 degree of freedom.
Example - 2 :
In the following example inverse of the left-tailed probability of the chi-squared distribution for 0.5, using 2 degrees of freedom.
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