Frequencies for first 10,000 rows of frace variable in natl1970 dataset : Race of | Father | Freq. Percent Cum. ------------+----------------------------------- 1 | 6,559 65.59 65.59 2 | 1,881 18.81 84.40 3 | 1 0.01 84.41 4 | 3 0.03 84.44 5 | 1 0.01 84.45 7 | 12 0.12 84.57 8 | 5 0.05 84.62 9 | 1,538 15.38 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016