I have a table A with 10 variables and 3200 observations, i run the proc summary nway to find the frequency of records with consideration of 5 variables ( in my class statement) and i am using the missing option in my summary nway.
In my output i am getting only 2825 observations.
1). i would like to know how to find the missing observations in table B from Table A ( i.e observations that are in table A not in table B).
2). Why some of the observations are missing