Hi everyone,   I need some help on Cochran-Mantel-Haenszel test (SAS Studio) in calculating the 1) the row mean score differ and 2) the general association for a set of data. (shown below)    Score      below average     average        above average Class X       1                     9              20 Class Y        3                    22             5 Class G       2                     3              25   New to SAS, so every answer would be appreciated.   Thanks, @Sam20. ... View more