|| It happens sometimes that pressing
(With Netscape 3.0 I have not observed this error yet!).
Try to reload this document.
Or try to switch to part 1 and back to part 2.
| There are two parts:
Part 1 (Continuous distribution functions) enables
you to calculate cumulative distribution functions and their inverse functions.
For discrete random variables (Part 2, this page) you enjoy the possibility to
calculate probability and cumulative probability functions.
(Source: Numerical Recipes in Pascal). The books of Johnson+Kotz (Continuous
Distributions I+II, Discrete Distributions) were also used.
| You must use the decimal point!
|| As input simple numbers but also mathematical more complex
expressions are allowed. For example
the input of Mu=1 and Sigma=1 for the normal distribution gives the same result as
Mu=3*Math.pow(4,1/2)-5 and Sigma=2*Math.sin(Math.PI/2)-1 or Mu=3-2 and Sigma=-1+2*1.
| You are allowed to copy
the necessary files (zipped in tables_e.zip (29 k).
Please do not change anything and always indicate the source.|
The computation of the inverse of the F-distribution sometimes fails!
The algorithms of the inverse of the Gamma and the Chi-Square-distribution
are quite slow, so please wait for a few seconds!
The cumulative distribution function of the Hypergeometric distribution is calculated exactly (simple additions),
that's why I've restricted the computation: If more than 100 additions have to be done,
the calculation is interrupted!
|| For n>2000 the normal distribution is used
instead of the t-distribution.
| Don't try to type in something like
"@#%", only an error will occur (and no usable result). So please concentrate and
don't try any tricks!
|| I've tried my best, but I give no warranty that
the algorithms work correctly under all circumstances.
If you are sure to have recognised an error, please send me an
Tell me the name of the distribution and the values of the parameters
that have produced the wrong result.
| I don't give any warranty
for the correctness of all calculations! An advice: if you need to calculate
F(x) out of x, so calculate also the inverse function of F(x), then the original
value x should appear.
With Copy and Paste this is done in a few seconds !
The statistical tables have been used in the following articles:|
"Calorie restriction extends Saccharomyces cerevisiae
lifespan by increasing respiration,"
Su-Ju Lin, Matt Kaeberlein, Alex A. Andalis, Lori A. Sturtz,
Pierre-Antoine Defossez, Valeria C. Culotta, Gerald R. Fink
& Leonard Guarente,
NATURE | VOL 418 | 18 JULY 2002
"Analysis of a Mutant Histone H3 That Perturbs the Association of
Swi/Snf with Chromatin",
Andrea A. Duina and Fred Winston,
MOLECULAR AND CELLULAR BIOLOGY, Vol. 24, No. 2, p. 561-572 (Jan. 2004)
"Saccharomyces cerevisiae SSD1-V Confers Longevity by a
Matt Kaeberlein, Alex A. Andalis, Gregory B. Liszt, Gerald R. Fink and Leonard Guarente,
Genetics 166: 1661-1672 (April 2004)
"Defects Arising From Whole-Genome Duplications in Saccharomyces cerevisiae",
Alex A. Andalis, Zuzana Storchova, Cora Styles, Timothy Galitski,
David Pellman and Gerald R. Fink,
Genetics 167: 1109-1121 ( July 2004)