Frequencies for first 10,000 rows of profile variable in accident dataset : Roadway | Profile | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,645 76.45 76.45 2 | 2,001 20.01 96.46 3 | 109 1.09 97.55 4 | 45 0.45 98.00 9 | 200 2.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016