Re: [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
 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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> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

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[R] test for proportion or concordance

[Adrian Johnson]

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

__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.