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From |
Toby <spiegeldesaster@googlemail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Which test to use? |

Date |
Thu, 19 May 2011 10:34:49 +0200 |

Hey, thanks for your reply. Not all information is included because some decisions could not be "mapped" by one of the rules. X and Y represent different rules how one can explain the data of decision. I just want to test whether one rule performs best. Kind regards, Toby P.S. Sorry for my bad english. 2011/5/19 Nick Cox <njcoxstata@gmail.com>: > I don't follow this. To start with, > > 1. If there is some rule mapping -decision- to -X- and -Y-, then there > is no information in -X- -Y- that is not in -decision-. If you have a > quantitative variable and a categorical reduction of it, it is usually > better practice to use all the information available. > > 2. I don't see how you can compare the frequencies of -X- and -Y- > without in effect reporting (consequences of) your rule in #1. > > Nick > > On Thu, May 19, 2011 at 9:12 AM, Toby <spiegeldesaster@googlemail.com> wrote: >> Hello, >> >> I have data of the following character >> >> >> decision X Y >> 34 1 0 >> 34 1 0 >> 56 0 0 >> 77 0 1 >> 23 0 0 >> >> >> X and Y take the function of categorizing the variable decision. If I >> take the mean value of X I get the frequency of decision that could be >> classifed as X, the same holds for Y. It could never be that X and Y >> take the value 1 at the same time. >> Now I want to test whether the frequency of X is significantly >> different from the frequency of Y. Can anybody help me figuring out >> which statistical test I have to use? > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Which test to use?***From:*Toby <spiegeldesaster@googlemail.com>

**Re: st: Which test to use?***From:*Nick Cox <njcoxstata@gmail.com>

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