Frequencies for first 10,000 rows of impact2 variable in vehicle dataset :

  PRINCIPAL |
     IMPACT |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        692        6.92        6.92
          1 |        228        2.28        9.20
          2 |        205        2.05       11.25
          3 |        614        6.14       17.39
          4 |         73        0.73       18.12
          5 |         92        0.92       19.04
          6 |        454        4.54       23.58
          7 |        156        1.56       25.14
          8 |         88        0.88       26.02
          9 |        832        8.32       34.34
         10 |        122        1.22       35.56
         11 |        370        3.70       39.26
         12 |      5,288       52.88       92.14
         13 |         74        0.74       92.88
         14 |        372        3.72       96.60
         99 |        340        3.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016