1 options linesize=80; 2 title 'Example 2. Test of proc freq'; 3 4 proc format; 5 value $fsex '1'='Male' 6 '2'='Female'; NOTE: Format $FSEX has been output. 7 run; NOTE: PROCEDURE FORMAT used: real time 0.28 seconds cpu time 0.04 seconds 8 9 data sample1; 10 infile 'example2.dat'; 11 input caseid 1-4 mathsat 6-8 score 10-11 sex $ 13 teach 15 12 format sex $fsex.; ______ ______ ______ 228 228 228 13 label caseid='Subject Number' 14 mathsat='SAT Math Score' 15 score='Final Calculus Score' 16 sex='Sex of Participant' 17 teach='Student Rated Teaching Ability'; 18 ERROR 228-185: Informat $FSEX is unknown. ERROR 228-185: Informat $FSEX is unknown. ERROR 228-185: Informat $FSEX is unknown. NOTE: The SAS System stopped processing this step because of errors. NOTE: SAS set option OBS=0 and will continue to check statements. This may cause NOTE: No observations in data set. WARNING: The data set WORK.SAMPLE1 may be incomplete. When this step was stopped there were 0 observations and 6 variables. What is the problem?