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Statistical Excel 2010 ◉ 47 views

=CHISQ.INV.RT()

Returns 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.

Applies To: Excel for Microsoft 365Excel for Microsoft 365 for MacExcel 2024Excel 2024 for MacExcel 2021Excel 2021 for MacExcel 2019Excel 2016
=CHISQ.INV.RT(probability,deg_freedom)
Hover argument names in the table for details.
Output typeNumber
Popularity7 / 100
VolatileNo
Dynamic ArrayNo
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◧ Arguments

ArgumentTypeRequiredDescription
probability Number Required A probability associated with the chi-squared distribution.
deg_freedom Number Required The number of degrees of freedom.

▣ Examples

▦ Data
CellValueDescription
A2 0.050001 Probability associated with the chi-squared distribution
A3 10 Degrees of freedom
A4 0.050001 Probability associated with the chi-squared distribution
A5 10 Degrees of freedom
Inverse of the one-tailed probability of the chi-squared distribution =CHISQ.INV.RT(A2,A3)
Result: 18.306973

§ 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.

✦ Tips

  • If deg_freedom is not an integer, it is truncated.

⚠ Common Errors

#VALUE! If either argument is nonnumeric, CHISQ.INV.RT returns the #VALUE! error value.
Fix: برای هر دو آرگومان مقدار عددی وارد کنید.
#NUM! If probability < 0 or probability > 1, CHISQ.INV.RT returns the #NUM! error value. If deg_freedom < 1, CHISQ.INV.RT returns the #NUM! error value.
Fix: Correct the input value
#N/A If the search has not converged after 64 iterations, the function returns the #N/A error value.
Fix: مقادیر ورودی را بررسی کنید یا با پارامترهای دیگری دوباره امتحان کنید.

⇄ Related Functions

=CHISQ.DIST.RT() Returns the right-tailed probability of the chi-squared distribution. The χ2 distribution is associated with a χ2 test. Use the χ2 test to compare observed and expected values. For example, a genetic experiment might hypothesize that the next generation of plants will exhibit a certain set of colors. By comparing the observed results with the expected ones, you can decide whether your original hypothesis is valid. =CHISQ.INV() Returns 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.

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