Re: [R] sleep data

From: Charles C. Berry <cberry_at_tajo.ucsd.edu>
Date: Thu 18 Jan 2007 - 23:23:43 GMT

A further note. The Cushny & Peebles article can be viewed here:

         http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1465734

and the page with the data is here:

         http://www.pubmedcentral.nih.gov/pagerender.fcgi?artid=1465734&pageindex=9

A machine readable version of the data is at:

         https://biostat.ucsd.edu/~cberry/t-test/sleep.dat

The version published in Student's Biometrika article has a typographical error, but it is evident that Student's computations were unaffected.

Chuck Berry

On Wed, 17 Jan 2007, Charles C. Berry wrote:

>
> Yes, you refer to
>
> Cushny, A. R. and Peebles, A. R. The action of optical isomers: II
> hyoscines. The Journal of Physiology, 1905, 32: 501.510.
>
> which was used by 'Student' to illustrate the paired t-test.
>
> This is indeed a crossover design.
>
> On Wed, 17 Jan 2007, Tom Backer Johnsen wrote:
>
>> When reading the documentation for the "sleep" data set in R, the
>> impression is clear, this is an "independent groups" kind of design
>> (two groups of 10 subjects each). However, when browsing the original
>> article (referred to in the help file), my impression is quite clear,
>> this is really a "repeated measures" kind of data (one group of 10
>> subjects, two observations). What is correct?
>>
>> Tom
>>
>> ______________________________________________
>> R-help@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
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
> Charles C. Berry (858) 534-2098
> Dept of Family/Preventive Medicine
> E mailto:cberry@tajo.ucsd.edu UC San Diego
> http://biostat.ucsd.edu/~cberry/ La Jolla, San Diego 92093-0901
>
>
>
>

Charles C. Berry                        (858) 534-2098
                                          Dept of Family/Preventive Medicine
E mailto:cberry@tajo.ucsd.edu	         UC San Diego
http://biostat.ucsd.edu/~cberry/         La Jolla, San Diego 92093-0901

______________________________________________
R-help@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 and provide commented, minimal, self-contained, reproducible code. Received on Fri Jan 19 10:28:07 2007

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Fri 19 Jan 2007 - 00:30:28 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.