[R] test for proportion or concordance

[Bert Gunter]

This list is about R programming, not statistics, although admittedly
there is a nonempty intersection. However, I think you would do better
posting this on a statistics list like stats.stackexchange.com.

-- Bert


Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Thu, Aug 3, 2017 at 7:19 AM, Adrian Johnson
<oriolebaltimore at gmail.com> wrote:
> Hello group,
>
> my question is deciding what test would be appropriate for following question.
>
> An experiment 'A' yielded 3200 observations of which 431 are
> significant. Similarly, using same method, another experiment 'B' on a
> different population yielded 2541 observations of which 260 are
> significant.
>
> There are 180 observations that are common between significant
> observations of A and B.
> (180 are common between 431 and 260).
>
> 80 observations are specific to A
> 251 observations are specific to B.
>
> The question are the 180 observations  that are common between A and B
> - are these 180 common observations occurring by  chance?
>
> What test would be appropriate for this scenario.  (if my total
> observations are fixed between two experiments A and B, I could use
> Cohens kappa for concordance or Chi-square etc.
> Since the total observations differ between experiments A and B, I
> dont know what test would be appropriate.   I appreciate your help.
>
> thanks
>
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