CHIINV

Calculates the inverse of the right-tailed chi-squared distribution.

Sample Usage

CHIINV(0.42, 2)

CHIINV(A2, B2)

Syntax

CHIINV(probability, degrees_freedom)

  • probability - The probability associated with the right-tailed chi-squared distribution.

    • Must be greater than 0 and less than 1.

  • degrees_freedom - The number of degrees of freedom of the distribution.

Notes

  • degrees_freedom is truncated to an integer if a non-integer is provided.

  • degrees_freedom must be at least 1.

  • All arguments must be numeric.

  • CHIINV is synonymous with CHISQ.INV.RT.

See Also

CHIDIST: Calculates the right-tailed chi-squared distribution, often used in hypothesis testing.

CHISQ.INV: Calculates the inverse of the left-tailed chi-squared distribution.

CHISQ.INV.RT: Calculates the inverse of the right-tailed chi-squared distribution.

CHITEST: Returns the probability associated with a Pearson’s chi-squared test on the two ranges of data. Determines the likelihood that the observed categorical data is drawn from an expected distribution.

FINV: Calculates the inverse of the right-tailed F probability distribution. Also called the Fisher-Snedecor distribution or Snedecor’s F distribution.

TINV: Calculates the inverse of the two-tailed TDIST function.

Example

Suppose you want to find the cutoff for the chi-squared statistic associated with a p-value of 0.05. With 4 degrees of freedom, you can consider any chi-squared statistic larger than 9.49 to be statistically significant.

  A B C
1 Probability Degrees freedom Solution
2 0.05 4 9.487729037
3 0.05 4 =CHIINV(0.05, 4)
4 0.05 4 =CHIINV(A2, B2)
true
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