Frequencies for first 10,000 rows of fmaps variable in natl1978 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          8        0.08        0.08
          1 |         16        0.16        0.24
          2 |         14        0.14        0.38
          3 |         20        0.20        0.58
          4 |         16        0.16        0.74
          5 |         52        0.52        1.26
          6 |         76        0.76        2.02
          7 |        165        1.65        3.67
          8 |        821        8.21       11.88
          9 |      4,428       44.28       56.16
         10 |      4,292       42.92       99.08
         99 |         92        0.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016