Re: [R] sleep data

From: Martin Maechler <maechler_at_stat.math.ethz.ch>
Date: Thu 18 Jan 2007 - 17:13:45 GMT

Thank you, Chuck and Tom.

I'd gladly improve the help page,

particularly if you can provide a patch against

https://svn.R-project.org/R/trunk/src/library/datasets/man/sleep.Rd

where I've already added the Cushny and Peebles reference, thanks to Chuck.

Regards,
Martin Maechler, ETH Zurich

>>>>> "ChuckB" == Charles C Berry <cberry@tajo.ucsd.edu> >>>>> on Wed, 17 Jan 2007 10:48:13 -0800 writes:

    ChuckB> Yes, you refer to

    ChuckB>  	Cushny, A. R. and Peebles, A. R. The action of
    ChuckB> optical isomers: II hyoscines. The Journal of
    ChuckB> Physiology, 1905, 32: 501.510.

    ChuckB> which was used by 'Student' to illustrate the paired     ChuckB> t-test.

    ChuckB> This is indeed a crossover design.

    ChuckB> 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.
>>

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

    ChuckB> ______________________________________________
    ChuckB> R-help@stat.math.ethz.ch mailing list
    ChuckB> https://stat.ethz.ch/mailman/listinfo/r-help PLEASE
    ChuckB> do read the posting guide
    ChuckB> http://www.R-project.org/posting-guide.html and
    ChuckB> provide commented, minimal, self-contained,     ChuckB> reproducible code.

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 04:18:22 2007

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