Normal Q-Q Plot for Nonnormal Data

 /****************************************************************/
 /*          S A S   S A M P L E   L I B R A R Y                 */
 /*                                                              */
 /*    NAME: CAPQQPL2                                            */
 /*   TITLE: Normal Q-Q Plot for Nonnormal Data                  */
 /* PRODUCT: QC                                                  */
 /*  SYSTEM: ALL                                                 */
 /*    KEYS: Capability Analysis, Quantile-Quantile Plots,       */
 /*   PROCS: CAPABILITY                                          */
 /*    DATA:                                                     */
 /*                                                              */
 /*     REF: SAS/QC Software:  Examples                          */
 /*    MISC: Differences between graphics devices may result in  */
 /*          output that varies from that shown in the documen-  */
 /*          tation.  Check the SAS log if the graphical output  */
 /*          is not created.                                     */
 /*                                                              */
 /****************************************************************/

options ps=60 ls=80;

data plates;
   label gap='Plate Gap in cm';
   input gap @@;
   cards;
0.746  0.357  0.376  0.327  0.485
1.741  0.241  0.777  0.768  0.409
0.252  0.512  0.534  1.656  0.742
0.378  0.714  1.121  0.597  0.231
0.541  0.805  0.682  0.418  0.506
0.501  0.247  0.922  0.880  0.344
0.519  1.302  0.275  0.601  0.388
0.450  0.845  0.319  0.486  0.529
1.547  0.690  0.676  0.314  0.736
0.643  0.483  0.352  0.636  1.080
;

symbol1 c=white v=star h=1.5;       /* Data Points */

title 'Normal Q-Q Plot of 50 Plate Gaps';

proc capability data=plates noprint;
   var gap;
   specs lsl=0.3 clsl=yellow llsl=1
         usl=0.8 cusl=yellow lusl=20;
   qqplot /
      cframe=gray
      legend=legend1
      normal
      square;
   legend1 cframe=gray cborder=black;
run;

goptions reset=all;