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

  Jackknife |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,470       94.70       94.70
          1 |        450        4.50       99.20
          2 |         11        0.11       99.31
          3 |         69        0.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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