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Re: st: Which test to use?
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Which test to use?
Date
Thu, 19 May 2011 09:28:26 +0100
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 <[email protected]> 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?
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