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

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 > > ______________________________________________ > R-help at 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.