Frequencies for pwhldrwhl variable in parkwork dataset :

  Number of |
wheels/driv |
  er wheels |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        601       59.98       59.98
         42 |        225       22.46       82.44
         44 |         93        9.28       91.72
         64 |         83        8.28      100.00
------------+-----------------------------------
      Total |      1,002      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016