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/*****************************************************************/
/* The default mean symbol on a HILO plot is a horizontal tick   */
/* mark.  You can change the symbol by overlaying a dummy symbol */
/* to 'block' out the tick mark, then put a new symbol           */
/* over that symbol.  You'll need to run proc means to get       */
/* the mean y value for each x value.  This code does it all.    */
/*****************************************************************/


goptions reset=all border;

data a;
  input x y;
  datalines;
1 45
1 73
2 49
2 75
3 52
3 60
4 39
4 62
5 50
5 72
;

proc means data=a;
  by x;
  output out=meandata mean=means;
run;


data b;
  merge a meandata;
  by x;
run;

proc print data=b; 
run;

symbol1 i=hiloj v=dot c=blue;
symbol2 i=none v=dot  c=white;
symbol3 i=none v=circle c=red;
axis1 offset=(2,2);

title1 'New Symbol';

proc gplot data=b;
  plot y*x means*x means*x / overlay haxis=axis1;
run;
quit;

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