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

   Land Use |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      4,069       40.69       40.69
          2 |      5,930       59.30       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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