Frequencies for sp_jur variable in accident dataset :

    Special |
Jurisdictio |
          n |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        570       99.82       99.82
          1 |          1        0.18      100.00
------------+-----------------------------------
      Total |        571      100.00

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