search for: averank

Hi Everyone. I am rather new to R and I've been trying to implement a function to carry out the above test. For a couple of days now I've been stuck on how to generate average rank differences. Say I have a vector of average ranks: averank<- c(2,5,9,12) I would like to subtract averank[1] from averank[2], averank[1] and averank[2] from averank[3] and averank[1], averank[2] and averank[3] from averank[4] etc (I know the syntax is wrong here... it's just for illustration) but I can't work out how to do it. Ideally I wou...