SAS Sample Code

data Measures;
   input Diameter @@;
   label Diameter='Diameter in mm';
   datalines;
5.501  5.251  5.404  5.366  5.445  5.576  5.607
5.200  5.977  5.177  5.332  5.399  5.661  5.512
5.252  5.404  5.739  5.525  5.160  5.410  5.823
5.376  5.202  5.470  5.410  5.394  5.146  5.244
5.309  5.480  5.388  5.399  5.360  5.368  5.394
5.248  5.409  5.304  6.239  5.781  5.247  5.907
5.208  5.143  5.304  5.603  5.164  5.209  5.475
5.223
 ;
run;


ods html style=statistical;
ods graphics on;

title 'Lognormal Q-Q Plot for Diameters';

proc capability data=Measures noprint;
   qqplot Diameter / lognormal(sigma=0.5 theta=5 slope=0.39)
                     pctlaxis(grid)
                     vref = 5.8 5.9 6.0;
run;

ods graphics off;
ods html close;

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