Frequencies for first 10,000 rows of spec_use variable in vehicle dataset : SPECIAL USE | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,864 98.64 98.64 1 | 13 0.13 98.77 2 | 4 0.04 98.81 3 | 9 0.09 98.90 4 | 1 0.01 98.91 5 | 21 0.21 99.12 6 | 3 0.03 99.15 7 | 4 0.04 99.19 9 | 81 0.81 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016