I have a dataset as follows. And I want to get the percentage of students with A, B, or C for each class, is it possible to do by Proc SQL? Thank you so much.
--------------------
ID Credit Class
--------------------
1 A 1
2 B 1
3 B 1
4 C 1
5 A 1
6 A 2
7 C 2
8 C 2
9 C 2
10 B 2
-------------------
And the result I want to get is
-----------------------
Class A B C
-----------------------
1 0.4 0.4 0.2
2 0.2 0.2 0.6
----------------------
You can calculate the average of a boolean reponse:
data have;
input credit $ class;
datalines;
A 1
B 1
B 1
C 1
A 1
A 2
C 2
C 2
C 2
B 2
;
proc sql;
SELECT class,
mean(credit = 'A') 'A',
mean(credit = 'B') 'B',
mean(credit = 'C') 'C'
FROM have
GROUP BY class;
quit;
You can calculate the average of a boolean reponse:
data have;
input credit $ class;
datalines;
A 1
B 1
B 1
C 1
A 1
A 2
C 2
C 2
C 2
B 2
;
proc sql;
SELECT class,
mean(credit = 'A') 'A',
mean(credit = 'B') 'B',
mean(credit = 'C') 'C'
FROM have
GROUP BY class;
quit;
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