Create the dot plot. The RESPONSE= option specifies the response variable. The STAT= option specifies that the mean statistic is used to analyze the graph. The LIMITSTAT= option specifies that the limit statistic is the standard deviation. The NUMSTD= option specifies that one standard deviation is used.

proc sgplot data=sashelp.class(where=(age<16));
  dot age / response=height stat=mean
            limitstat=stddev numstd=1;
run;