If you want a kernel density estimate of the FREQ variable, you can use  proc sgplot data=em; density freq / type=kernel group=em; run; If you want to form a histogram, but plot the frequencies as a series, you can use PROC UNIVARIATE to bin the data and the SERIES statement to plot the binned frequencies:   proc univariate data=em noprint; class em; histogram freq / outhist=out midpoints=(0 to 0.8 by 0.05); run; proc sgplot data=out; series x=_midpt_ y=_count_ / group=em; run; ... View more