Dear Rs:
outer(1:3, 1:3, function(df1, df2) qf(0.95, df1, df2))
I compare this F distribution results with the table, the answers were perfect.
But I need to see for chi-sqaured distribution. When I employed the similar
formula
outer(1:3, 1:3, function(df1, df2) qchisq(0.95, df1, df2)) , I am getting
unexpected results. I need to see the following values:
p=0.750 .....
1 1.323
2 2.773
3 4.108
Thanking you
Prasanna
Prasanna Balaprakash,
Universit? Libre de Bruxelles,
50, Av. F. Roosevelt, CP 194/6,
B-1050 Brussels,
Belgium.
if you check ?qchisq, you'll see that the second argument of the
function denotes the non-centrality parameter! Try
qchisq(0.75, 1:3)
to get your answer.
Best,
Dimitris
----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat
http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm
----- Original Message -----
From: "Prasanna Balaprakash" <pbalapra at ulb.ac.be>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, January 21, 2005 12:27 PM
Subject: [R] chi-Squared distribution
> Dear Rs:
>
>
> outer(1:3, 1:3, function(df1, df2) qf(0.95, df1, df2))
>
> I compare this F distribution results with the table, the answers
> were perfect. But I need to see for chi-sqaured distribution. When I
> employed the similar formula
>
> outer(1:3, 1:3, function(df1, df2) qchisq(0.95, df1, df2)) , I am
> getting unexpected results. I need to see the following values:
>
> p=0.750 .....
> 1 1.323
>
> 2 2.773
>
> 3 4.108
>
>
> Thanking you
> Prasanna
>
>
>
>
>
>
> Prasanna Balaprakash,
> Universit? Libre de Bruxelles,
> 50, Av. F. Roosevelt, CP 194/6,
> B-1050 Brussels,
> Belgium.
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
>
----- Original Message ----- From: "Dimitris Rizopoulos" <dimitris.rizopoulos at med.kuleuven.ac.be> To: "Prasanna Balaprakash" <pbalapra at ulb.ac.be> Cc: <r-help at stat.math.ethz.ch> Sent: Friday, January 21, 2005 1:05 PM Subject: Re: [R] chi-Squared distribution> if you check ?qchisq, you'll see that the secondMy mistake, the third argument> argument of the function denotes the non-centrality parameter! Try > > qchisq(0.75, 1:3) > > to get your answer. > > Best, > Dimitris > > ---- > Dimitris Rizopoulos > Ph.D. Student > Biostatistical Centre > School of Public Health > Catholic University of Leuven > > Address: Kapucijnenvoer 35, Leuven, Belgium > Tel: +32/16/336899 > Fax: +32/16/337015 > Web: http://www.med.kuleuven.ac.be/biostat > http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm > > > ----- Original Message ----- > From: "Prasanna Balaprakash" <pbalapra at ulb.ac.be> > To: <r-help at stat.math.ethz.ch> > Sent: Friday, January 21, 2005 12:27 PM > Subject: [R] chi-Squared distribution > > >> Dear Rs: >> >> >> outer(1:3, 1:3, function(df1, df2) qf(0.95, df1, df2)) >> >> I compare this F distribution results with the table, the answers >> were perfect. But I need to see for chi-sqaured distribution. When >> I employed the similar formula >> >> outer(1:3, 1:3, function(df1, df2) qchisq(0.95, df1, df2)) , I am >> getting unexpected results. I need to see the following values: >> >> p=0.750 ..... >> 1 1.323 >> >> 2 2.773 >> >> 3 4.108 >> >> >> Thanking you >> Prasanna >> >> >> >> >> >> >> Prasanna Balaprakash, >> Universit? Libre de Bruxelles, >> 50, Av. F. Roosevelt, CP 194/6, >> B-1050 Brussels, >> Belgium. >> >> ______________________________________________ >> R-help at stat.math.ethz.ch mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide! >> http://www.R-project.org/posting-guide.html >> >