Re: [Fwd: st: Kolmogorov Smirnov, groupvar as cumulative relativefrequencies or rawdata?]

[Knag Anne-Christine <anne-christine.knag@imr.no>]

Title: Re: [Fwd: st: Kolmogorov Smirnov, groupvar as cumulative relative frequencies or rawdata?]

Hi,
Sorry about that, let me ask the question again, without the .dat:

> Should groupvar in stata consist of raw data or already calculated cumulative relative frequencies..? I've done the latter, but now I see that other statistical-packages wants raw data and calculate the cumulative relative frequencies automatically.
>  
> I get the feeling from the help file that I have assumed correctly and that stata wants the cumulative rel. frequencies of the variable you want to test. Am I correct?
>  
> ksmirnov performs one- and two-sample Kolmogorov-Smirnov tests of the
>     equality of distributions.  In the first syntax, varname  is the variable
>     whose distribution is being tested, and exp must evaluate to the
>     corresponding (theoretical) cumulative.  In the second syntax, groupvar 
>     must take on two distinct values.  The distribution of varname for the
>     first value of groupvar is compared with that of the second value
>  
> Regards,
> AC


On 7/7/07 11:25 PM, "Marcello Pagano" <pagano@biostat.harvard.edu> wrote:

> Please, Anne-Christine,
>
> Do not attach your winmail.dat to messages to the list.
>
> Thanks,
>
> m.p.
>
> -------- Original Message --------   
>  Subject:  st: Kolmogorov Smirnov, groupvar as cumulative relative frequencies or rawdata?  
>  Date:  Sat, 7 Jul 2007 20:02:16 +0200  
>  From:  Knag Anne-Christine <anne-christine.knag@imr.no> <mailto:anne-christine.knag@imr.no>   
>  Reply-To:  statalist@hsphsun2.harvard.edu  
>  To:  <statalist@hsphsun2.harvard.edu> <mailto:statalist@hsphsun2.harvard.edu>   
>  References:  <002601c7c009$572c7b00$8f9e5680@a8js><E1E6452315B4DA40889EFA84D436380F045F4A@wpmailp5.rjr.com> E1E6452315B4DA40889EFA84D436380F045F4A@wpmailp5.rjr.com"><mailto:E1E6452315B4DA40889EFA84D436380F045F4A@wpmailp5.rjr.com> <001301c7c0a2$1bb0b930$8f9e5680@a8js> <fcffff0d0707070801v5f438f06p3c4d920815b67ad@mail.gmail.com> fcffff0d0707070801v5f438f06p3c4d920815b67ad@mail.gmail.com"><mailto:fcffff0d0707070801v5f438f06p3c4d920815b67ad@mail.gmail.com>   
>
> Hi,
> Should groupvar in stata consist of raw data or already calculated cumulative relative frequencies..? I've done the latter, but now I see that other statistical-packages wants raw data and calculate the cumulative relative frequencies automatically.
>  
> I get the feeling from the help file that I have assumed correctly and that stata wants the cumulative rel. frequencies of the variable you want to test. Am I correct?
>  
> ksmirnov performs one- and two-sample Kolmogorov-Smirnov tests of the
>     equality of distributions.  In the first syntax, varname <https://webpost.imr.no/help.cgi?varname>  is the variable
>     whose distribution is being tested, and exp <https://webpost.imr.no/help.cgi?exp>  must evaluate to the
>     corresponding (theoretical) cumulative.  In the second syntax, groupvar <https://webpost.imr.no/help.cgi?varlist> 
>     must take on two distinct values.  The distribution of varname for the
>     first value of groupvar is compared with that of the second value
>  
> Regards,
> AC