Excel - CHISQ.INV Function



CHISQ.INV Function

The Excel CHISQ.INV function, part of the statistical function, generates the inverse of the left-tailed probability associated with the chi-squared distribution. It may be coupled with other functions, such as the CHISQ.TEST function to compare the test statistic value and the RAND function to create statistical data for further educational and experimental uses.

The CHISQ.INV in Excel is opposite to the CHISQ.DIST function in Excel. However, both functions follow the Chi-squared distribution.

Compatibility

This advanced Excel function is compatible with the following versions of MS-Excel −

  • Excel for Microsoft 365 for Mac
  • Excel for the web
  • Excel 2024
  • Excel 2024 for Mac
  • Excel 2021
  • Excel 2021 for Mac
  • Excel 2019
  • Excel 2016
  • Excel Web App
  • Excel 2013
  • Excel 2010

Syntax

The syntax of CHISQ.INV function is as follows −

=CHISQ.INV(probability,deg_freedom)

Arguments

You can use the following arguments with the CHISQ.INV function −

Argument Description Required/Optional
Probability A probability associated with the chi-squared distribution. Required
Deg_freedom A positive numeric value represents the degree of freedom. Required

Points to Remember

  • If deg_freedom argument is in decimal value, then this argument is rounded to integers.
  • If the non-numeric value is specified in the argument, then the CHISQ.INV function returns the #VALUE! error.
  • If the probability is less than zero, then CHISQ.INV function will retrieve the #NUM! error.
  • If deg_freedom is negative or deg_freedom is greater than 10^10, then CHISQ.INV function yields the #NUM! error.

How to utilize the CHISQ.INV function in Excel?

Below are the steps to use the CHISQ.INV function −

  • First, open a desired Excel worksheet.
  • Place the cursor on the specific cell and double-click it.
  • Write the formula =INV(
  • Select the cell that contains the probability and then write the comma.
  • Choose the cell that specify the degree of freedom.
  • Now, enclosed the parenthesis ).
  • Finally, hit the Enter tab to evaluate this function.

Examples of CHISQ.INV Function

Practice the following examples to learn the use of the CHISQ.INV function in Excel.

Example 1

If deg_freedom argument is in decimal value, then this argument is rounded to integers.

Solution

Assume the sample dataset where you must compute the CHI square value for the corresponding probability and deg_freedom. You may enter the formula =CHISQ.INV(C2,C3) in the C4 cell and hit the Enter. Here, the deg_freedom value is 2.3, which is truncated to 2.

CHISQ.INV Function

Therefore, the CHISQ.INV function returns the 0.71335.

CHISQ.INV Function 1

Example 2

If the non-numeric value is specified in the argument, then the CHISQ.INV function returns the #VALUE! error.

Solution

First, write the "text" and "ent" in the C2 and C3 cells and enter the formula =CHISQ.INV(C2,C3) in the C4 cell and hit the Enter.

CHISQ.INV Function 2

Hence, the CHISQ.INV function retrieves the #VALUE! error.

Example 3

The probability must be resided between 0 and 1. Otherwise, the CHISQ.INV function will retrieve the #NUM! error.

Solution

Here, the screenshot depicts the probability containing the negative value of -0.3.

CHISQ.INV Function 3

After pressing the Enter, the CHISQ.INV function will retrieve the #NUM! error.

CHISQ.INV Function 4

Example 4

If deg_freedom is negative or deg_freedom is greator than 10^10, then CHISQ.INV function yields the #NUM! error.

Solution

The value you write in the B3 cell is 1.2356334E+44, greater than the 10^10. Select the cell B4 and enter the formula =CHISQ.INV(B2,B3).

CHISQ.INV Function 5

Once you hit the Enter, the CHISQ.INV function will retrieve the #NUM! error.

CHISQ.INV Function 6

Download Practice Sheet

You can download and use the sample data sheet to practice the CHISQ.INV function.

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