Frequencies for first 10,000 rows of whldrwhl variable in person dataset :

  number of |
wheels/driv |
  er wheels |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,296       72.96       72.96
         42 |      1,470       14.70       87.66
         44 |        900        9.00       96.66
         64 |        333        3.33       99.99
         84 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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