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2007 Aug 07
2
R and excell differences in calculation F distributionfunction
R-help,
I'm trying to work out the density function by doing:
> df(5.22245, 3, 22)
[1] 0.005896862
> df(15.20675, 6, 4)
[1] 0.001223825
In excell the result is :
0.0071060464 <*> FDIST(5.22245,3,22)
0.0100001406 <--> FDIST(15.20675,6,4)
>From my point of view the differences in the second case
are substantial.
Can anyone give me a hint on this?
Thanks in
2005 Jan 21
0
R: chi-Squared distribution in Friedman test
Hi,
pchisq -> distribution function
dchisq -> density function
pval is the area under the curve, to calculte it you
use distribution function which is the integral of
density function. See:
http://www.itl.nist.gov/div898/handbook/eda/section3/eda362.htm
http://mathworld.wolfram.com/DistributionFunction.html
f(x) density function
F(x) distribution function =Pr(X<x)= integral(f(x))
Hoping I helped you!
Regards
Vito
you wrote:
Dear R helpers:
Thanks for the previous reply. I am using Friedman
racing test. According the the book "Pratical
Nonprametric Statistic" by WJ Conover, a...