[R] (no subject)

[Keniajin Wambui]

Thanks Peter

On Wed, Jan 15, 2014 at 7:23 PM, peter dalgaard <pdalgd at gmail.com> wrote:
> The data have no resemblance to what prop.trend.test expects (counts and totals, optionally group scores).
>
> The prop.trend.test() function tests for trend in proportions. Were you attempting a rank correlation, or maybe a rank sum (Wilcoxon type) test against a directional alternative? (I'm not too sure, but package "coin" might have the latter).
>
> -pd
>
> On 15 Jan 2014, at 07:30 , Keniajin Wambui <kiangati at gmail.com> wrote:
>
>> I am using R3.02 on WIndows 7 64bit.
>> How can I test for trend across ordered groups. I am using
>> `prop.trend.test` but it doesn't order into groups and doesn't give
>> the expected output of `sum of ranks` , `z value`...
>>
>> I have this data set and am doing
>>
>>    `prop.trend.test (birthweight2$lbw2 ,birthweight2$gestwkgp2 )`
>>
>> Here is a sample data
>>    lbw2          gestwkgp
>>    normal birth weight    3
>>    normal birth weight    3
>>    normal birth weight    3
>>    normal birth weight    4
>>    normal birth weight    3
>>    normal birth weight    3
>>    normal birth weight    3
>>    normal birth weight    4
>>    low birth weight    2
>>    normal birth weight    4
>>
>>
>>
>>
>> --
>> Mega Six Solutions
>> Web Designer and Research Consultant
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
> --
> Peter Dalgaard, Professor
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
>



-- 
Mega Six Solutions
Web Designer and Research Consultant