search for: ck114042

Dear all, I have a matrix with two columns: "Names" and "Values" In names: there are 4 groups they are, CK113234, CK116296, CK116292 and CK114042 I want to *sort values* (decreasing order) based on each group and take average of the *top two numbers* in each of the groups. > dput(x) structure(list(Names = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 5L, 5L, 5L, 5L, 2L, 2L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 4L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L),...