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A machine independent algorithm for computing percentage points of the χ2-distribution

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Summary

An algorithm is presented to compute machine-independently percentage points of the χ2-Verteilung distribution, i.e. to find the solution χ2 of the equation

$$P = (2^{v/2} \Gamma (v/2))^{ - 1} \int_0^{\chi ^2 } {t^{v/2 - 1} e^{ - t/2} dt}$$

whenP and ν are given.

Zusammenfassung

Es wird ein Algorithmus angegeben, der maschinenunabhängig Fraktile der χ2-Verteilung berechnet, d.h. die Gleichung

$$P = (2^{v/2} \Gamma (v/2))^{ - 1} \int_0^{\chi ^2 } {t^{v/2 - 1} e^{ - t/2} dt}$$

bei gegebenemP und ν nach χ2 auflöst.

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References

  1. M. Abramowitz andI. A. Stegun,Handbook of Mathematical Functions, Dover Publications, New York (1970).

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  2. H. Störmer,Praktische Anleitung zu statistischen Prüfungen, Oldenbourg Verlag, München/Wien (1971).

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  3. H. E. Fettis, ‘A Stable Algorithm for Computing the Inverse Error Function in the “Tail End” Region’, Math. of Comp.28, 126, (April 1974).

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Gander, W. A machine independent algorithm for computing percentage points of the χ2-distribution. Journal of Applied Mathematics and Physics (ZAMP) 28, 1133–1136 (1977). https://doi.org/10.1007/BF01601679

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  • DOI: https://doi.org/10.1007/BF01601679

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