This post will guide you how to use the CHIINV function with syntax and examples in Microsoft excel.

Description

The Excel CHIINV function returns the inverse of the right-tailed probability of the chi-squared distribution.  For example, if the probability is equal to CHIDIST(x,…), then the CHIINV(probability,…) is equal to x.

The CHIINV function is a build-in function in Microsoft Excel and it is categorized as a Statistical Function.

The CHIINV function is available in Excel 2016, Excel 2013, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000, Excel 2011 for Mac.

Syntax

The syntax of the CHIINV function is as below:

= CHIINV (probability, deg_freedom)

Where the CHIINV function arguments are:

• Probability -This is a required argument. The probability for the chi-squared distribution.
• deg_freedom – This is a required argument.  The number of degrees of freedom. (the value must be a positive integer)

Note:

• If any argument is non-numeric, the CHIINV function will return #VALUE! Error.
• If deg_freedom argument is not integer and the CHIINV function will truncate it.
• If deg_freedom argument is smaller than 1, the CHIINV function will return the #NUM! Error.
• If probability is smaller than 0 or greater than 1, then the CHIINV function will return the #NUM! Error.

Excel CHIINV Function Examples

The below examples will show you how to use Excel CHIINV Function to get the inverse of the right-tailed probability of the chi-squared distribution.

1# to calculate the right-tailed probability of the chi-square distribution, using the following formula:

=CHIINV(0.06,10)

---

Related Functions

• Excel CHIDIST function
  The Excel CHIDIST function returns the right-tailed probability of the chi-squared distribution.The syntax of the CHIDIST function is as below:= CHIDIST (x,deg_freedom).…
• Excel CHITEST Function
  The Excel CHITEST function returns the value from the chi-squared distribution for the statistic and the appropriate degrees of freedom. The syntax of the CHITEST function is as below:= CHITEST(actual_range, expected_range)…