Frequencies for first 10,000 rows of alignmnt variable in accident dataset : Roadway | Alignment | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,212 72.12 72.12 2 | 2,736 27.36 99.48 9 | 52 0.52 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016