Frequencies for pwhldrwhl variable in parkwork dataset :

  number of |
wheels/driv |
  er wheels |      Freq.     Percent        Cum.
------------+-----------------------------------
            |        638       58.48       58.48
         42 |        252       23.10       81.58
         44 |        120       11.00       92.58
         64 |         81        7.42      100.00
------------+-----------------------------------
      Total |      1,091      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016