1          OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 NOTE: ODS statements in the SAS Studio environment may disable some output features.
 56         
 57         /********************** kars.sas **************************/
 58         title 'Metric Cars Data Example';
 59         title2 'Jerry Brunner:  Student Number 999999999';
 60         
 61         data auto;
 62              infile '/folders/myfolders/431s17/mcars4.data.txt' firstobs=2 ;  /* Skipping the header on line 1 */
 63              input id country $ lper100k weight length;
 64              mpg = 100/lper100k * 0.6214/0.2642;
 65         /* Indicator dummy vars: Ref category is Japanese */
 66              if country = 'US' then c1=1;
 67                 else if country = 'Japan' then c1=0;
 68                 else if country = 'Europ' then c1=0;
 69              if country = 'Europ' then c2=1;
 70                 else if country = 'US' then c2=0;
 71                 else if country = 'Japan' then c2=0;
 72         /* Product terms for the interactions */
 73              wc1 = weight*c1; wc2 = weight*c2;
 74              Lc1 = length*c1; Lc2 = length*c2;
 75              label country = 'Country of Origin'
 76                    lper100k = 'Litres per 100 Kilometers'
 77                    weight = 'Weight in kg'
 78                    length = 'Length in cm'
 79                    mpg    = 'Miles per gallon';
 80         
 
 NOTE: The infile '/folders/myfolders/431s17/mcars4.data.txt' is:
       Filename=/folders/myfolders/431s17/mcars4.data.txt,
       Owner Name=root,Group Name=vboxsf,
       Access Permission=-rwxrwx---,
       Last Modified=18Jan2015:19:30:16,
       File Size (bytes)=4160
 
 NOTE: 100 records were read from the infile '/folders/myfolders/431s17/mcars4.data.txt'.
       The minimum record length was 40.
       The maximum record length was 40.
 NOTE: The data set WORK.AUTO has 100 observations and 12 variables.
 NOTE: DATA statement used (Total process time):
       real time           0.01 seconds
       cpu time            0.01 seconds
       
 81         proc freq;
 
 82              title3 'Frequency Distributions';
 83              tables country c1 c2 ;
 
 NOTE: There were 100 observations read from the data set WORK.AUTO.
 NOTE: PROCEDURE FREQ used (Total process time):
       real time           0.06 seconds
       cpu time            0.07 seconds
       
 84         proc means;
 
 85              title3 'Means and standard deviations by country';
 86              class country;
 87              var lper100k mpg weight length;
 88         
 
 NOTE: There were 100 observations read from the data set WORK.AUTO.
 NOTE: PROCEDURE MEANS used (Total process time):
       real time           0.07 seconds
       cpu time            0.06 seconds
       
 89         proc corr;
 
 90              title3 'Correlation matrix';
 91              var lper100k mpg weight length;
 92         
 93         ods graphics off; /* Suppress diagnostic plots */
 
 NOTE: PROCEDURE CORR used (Total process time):
       real time           0.07 seconds
       cpu time            0.05 seconds
       
 94         proc reg;
 
 95              title3 'Regression model with non-parallel planes';
 96              model lper100k = weight length c1 c2 wc1 wc2 Lc1 Lc2;
 97              EqualSlopes: test wc1 = wc2 = Lc1 = Lc2 = 0;
 98         
 
 NOTE: PROCEDURE REG used (Total process time):
       real time           0.09 seconds
       cpu time            0.08 seconds
       
 99         proc reg;
 
 100             title3 'Parallel planes';
 101             model lper100k = weight length c1 c2;
 102             USvsEURO: test c1=c2;       /* US vs European controlling for weight and length */
 103             country: test c1 = c2 = 0;
 104        
 105        
 106        OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 118