Frequencies for first 10,000 rows of nlbnd variable in natl1991 dataset :

  Number of |
Live Births |
   Now Dead |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,850       98.50       98.50
          1 |        140        1.40       99.90
          2 |          7        0.07       99.97
         99 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015