Frequencies for first 10,000 rows of nlbnd variable in natlterr1995 dataset :

  Number of |
Live Births |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,815       98.15       98.15
          1 |        158        1.58       99.73
          2 |         21        0.21       99.94
          3 |          4        0.04       99.98
          4 |          1        0.01       99.99
          5 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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