Frequencies for first 10,000 rows of profile variable in accident dataset : Roadway | Profile | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,740 77.40 77.40 2 | 1,902 19.02 96.42 3 | 109 1.09 97.51 4 | 32 0.32 97.83 9 | 217 2.17 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016