After a three-year haitus since completing my masters in data analytics, health and life sciences, I am jumping back in and using my old grad school book, Applied Statistics and the SAS Programming Language(Cody et al, 2006). I am running into a problem with the IF/THEN ELSE IF statements and it makes no sense. I guess the book could be wrong, but I am entering everything the books says to enter. I am getting this error:   Here is my code:   PROC FORMAT; VALUE $SEXFMT '1' = 'MALE' '2' = 'FEMALE' '3' = 'MISCODED'; VALUE $RACE '1' = 'WHITE' '2' = 'AFRICAN AMERICAN' '3' = 'HISPANIC' '4' = 'OTHER'; VALUE $OSCAR '1' = 'SINGLE' '2' = 'MARRIED' '3' = 'WIDOWED' '4' = 'DIVORCED'; VALUE $EDUC '1' = 'HIGH SCHOOL OR LESS' '2' = 'TWO-YEAR COLLEGE' '3' = 'FOUR-YEAR COLLEGE' '4' = 'GRADUATE COLLEGE'; VALUE $LIKERT 1 = 'STRONGLY DISAGREE' 2 = 'DISAGREE' 3 = 'NO OPINION' 4 = 'AGREE' 5 = 'STRONGLY AGREE'; VALUE AGEFMT 1 = '0-20' 2 = '21-40' 3 = '41-60' 4 = '>60'; RUN; DATA QUEST; INPUT ID $ 1-3 AGE 4-5 GENDER $ 6 RACE $ 7 MARITAL $ 8 EDUCATION $ 9 PRESIDENT $ 10 ARMS $ 11 CITIES $ 12; IF AGE GE 0 AND AGE LE 20 THEN AGEGRP = 1; ELSE IF AGE GT 20 AND AGE LE 40 THEN AGEGRP = 2; ELSE IF AGE GT 40 AND AGE LE 60 THEN AGEGRP = 3; ELSE IF AGE GT 60 THEN AGEGRP = 4; *CLARIFY TABLES; LABEL MARITAL = 'MARITAL STATUS' EDUCATION = 'EDUCATION LEVEL' PRESIDENT = 'PRESIDENT DOING A GOOD JOB' ARMS = 'ARMS BUDGET INCREASE' CITIES = 'FEDERAL AID TO CITIES' AGEGRP = 'AGE GROUP'; FORMAT GENDER $SEXFMT. RACE $RACE. MARITAL $OSCAR. EDUCATION $EDUC. PRESIDENT ARMS CITIES LIKERT.; DATALINES; 001091111232 002452222422 003351324442 004271111121 005682132333 006651243425 ; PROC MEANS DATA=QUEST MAXDEC=2 N MEAN STD CLM; TITLE "QUESTIONNAIRE ANALYSIS"; VAR AGE; FORMAT AGEGRP AGEFMT.; RUN; PROC FREQ DATA=QUEST; TITLE "FREQUENCY COUNTS FOR CATEGORICAL VARIABLES"; TABLES GENDER -- AGEGRP; *VARS MUST BE IN ORDER TO USE THE -- SHORTCUT; RUN;   I know I am doing something stupid. Any help would be great.   ... View more