Frequencies for first 10,000 rows of land_use variable in accident dataset :

   Land Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      5,176       51.76       51.76
          2 |      4,592       45.92       97.68
          9 |        232        2.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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