I've asked for the opinion's about several different subjects, all with the same items/constructs. So now I have to calculate Cronbach's alpha for the construct to see if it is valid, using not just the answer from one subject but the answers of all 20 subjects together. How do I do that?
I have 3 variables in the data set(PR1, PR2, PR3)of medical procedures which coded with procedures that the patients received (normal data). I need create a variable containing 2 codings (001 and 002) from all these 3 procedures (PR1,PR2,PR3). I also need to keep 001 and 002 coding separately for...