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

  Jackknife |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,440       94.40       94.40
          1 |        501        5.01       99.41
          2 |         12        0.12       99.53
          3 |         47        0.47      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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