Hi Somayya, When you perform a t-test on two sets of numeric values, the answer you get tells you how likely it is that those two sets of numbers came from the same distribution. What most people are interested in is whether the means of those two distributions are different. Let's see, you seem to be with NHS in Scotland, so you are probably interested in something like whether the mean reported severity of hangover is the same for whisky as vodka in a sample of drinkers, controlling for number of standard drinks of course. About all you can say from a t-test is that those drinking one drink felt worse the next day _if_ the p value is small enough. Beware of doing lots of t-tests and looking for <0.05.
Jim On Tue, Feb 7, 2017 at 1:46 AM, Gardee, Somayya <somayya.gar...@ggc.scot.nhs.uk> wrote: > Hello for my project I am trying to write up my results from the paired > t-test I conducted. > Please could someone help. > > Thank you, > Somayya Gardee > **************************************************************************** > NHSGG&C Disclaimer > > The information contained within this e-mail and in any attachment is > confidential and may be privileged. If you are not the intended > recipient, please destroy this message, delete any copies held on your > systems and notify the sender immediately; you should not retain, copy > or use this e-mail for any purpose, nor disclose all or any part of its > content to any other person. > > All messages passing through this gateway are checked for viruses, but > we strongly recommend that you check for viruses using your own virus > scanner as NHS Greater Glasgow & Clyde will not take responsibility for > any damage caused as a result of virus infection. > > ************************************************************************** > ______________________________________________ > 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. ______________________________________________ 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.
