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

pre- impact |
   location |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         64        0.64        0.64
          1 |      5,918       59.18       59.82
          2 |      1,011       10.11       69.93
          3 |        117        1.17       71.10
          4 |      2,552       25.52       96.62
          5 |         25        0.25       96.87
          6 |         88        0.88       97.75
          7 |         37        0.37       98.12
          9 |        188        1.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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