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

  Jackknife |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,499       94.99       94.99
          1 |        438        4.38       99.37
          2 |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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