Frequencies for first 10,000 rows of tkaxler_t variable in vindecode dataset : (axle- | type, rear | axle) short | description | Freq. Percent Cum. ------------+----------------------------------- | 5,840 58.40 58.40 Single | 2,374 23.74 82.14 Tandem | 484 4.84 86.98 Unknown | 1,302 13.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Oct 2016