1          OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 61         
 62         /************************ math0.1.sas *************************/
 63         title 'Prediction of Performance in First-year Calculus';
 64         title2 'Read exploratory data and locate problems: Part 1';
 65         
 66         data mathex;
 67              infile '/folders/myfolders/441s18/Lecture/exploremath.data.txt';
 68              input id course precalc calc gpa calculus english mark lang $ sex $
 69                    nation1 nation2 sample;
 70         
 
 NOTE: The infile '/folders/myfolders/441s18/Lecture/exploremath.data.txt' is:
       Filename=/folders/myfolders/441s18/Lecture/exploremath.data.txt,
       Owner Name=root,Group Name=vboxsf,
       Access Permission=-rwxrwx---,
       Last Modified=January 18, 2016 17:34:49 o'clock,
       File Size (bytes)=44583
 
 NOTE: 579 records were read from the infile '/folders/myfolders/441s18/Lecture/exploremath.data.txt'.
       The minimum record length was 75.
       The maximum record length was 75.
 NOTE: The data set WORK.MATHEX has 579 observations and 13 variables.
 NOTE: DATA statement used (Total process time):
       real time           0.01 seconds
       cpu time            0.02 seconds
       
 71         proc freq data=mathex;
 
 72              title3 'Frequency distributions of all variables'; /* Don't print this! */
 73              tables _all_;
 74         
 75         /* After looking at frequency distributions, locate problem cases if necessary */
 76         
 
 NOTE: There were 579 observations read from the data set WORK.MATHEX.
 NOTE: PROCEDURE FREQ used (Total process time):
       real time           1.75 seconds
       cpu time            1.73 seconds
       
 77         proc print data=mathex;
 
 78               title3 'Strange marks in HS English';
 79               where english=0 or english > 100;
 80         
 
 NOTE: There were 9 observations read from the data set WORK.MATHEX.
       WHERE (english=0) or (english>100);
 NOTE: PROCEDURE PRINT used (Total process time):
       real time           0.08 seconds
       cpu time            0.09 seconds
       
 81         proc print data=mathex;
 
 82               title3 'Students with Strange High School Marks';
 83               where gpa = 0 or
 84                     english=0 or english > 100  or
 85                     calculus=0 or calculus>100;
 86         
 87         
 88         
 89         
 90         
 91         OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 104