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

  number of |
      forms |
  submitted |
for persons |
     not in |
      motor |
   vehicles |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,525       75.25       75.25
          1 |      2,325       23.25       98.50
          2 |        109        1.09       99.59
          3 |         25        0.25       99.84
          4 |          8        0.08       99.92
          5 |          2        0.02       99.94
          7 |          2        0.02       99.96
         11 |          1        0.01       99.97
         13 |          1        0.01       99.98
         17 |          1        0.01       99.99
         21 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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