Frequencies for first 10,000 rows of pcrash5 variable in vehicle dataset :

pre- impact |
   location |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         69        0.69        0.69
          1 |      5,819       58.19       58.88
          2 |      1,022       10.22       69.10
          3 |        121        1.21       70.31
          4 |      2,659       26.59       96.90
          5 |         29        0.29       97.19
          6 |        119        1.19       98.38
          7 |         32        0.32       98.70
          9 |        130        1.30      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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