Frequencies for first 10,000 rows of wtgain variable in natlterr1999 dataset :

Weight Gain |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        258        2.58        2.58
          1 |         15        0.15        2.73
          2 |         37        0.37        3.10
          3 |         34        0.34        3.44
          4 |         39        0.39        3.83
          5 |         71        0.71        4.54
          6 |         46        0.46        5.00
          7 |         60        0.60        5.60
          8 |         75        0.75        6.35
          9 |         47        0.47        6.82
         10 |        433        4.33       11.15
         11 |         74        0.74       11.89
         12 |        182        1.82       13.71
         13 |         97        0.97       14.68
         14 |        146        1.46       16.14
         15 |        472        4.72       20.86
         16 |        141        1.41       22.27
         17 |        136        1.36       23.63
         18 |        283        2.83       26.46
         19 |        135        1.35       27.81
         20 |      1,739       17.39       45.20
         21 |        200        2.00       47.20
         22 |        260        2.60       49.80
         23 |        201        2.01       51.81
         24 |        319        3.19       55.00
         25 |        696        6.96       61.96
         26 |        221        2.21       64.17
         27 |        160        1.60       65.77
         28 |        264        2.64       68.41
         29 |        140        1.40       69.81
         30 |        930        9.30       79.11
         31 |        129        1.29       80.40
         32 |        163        1.63       82.03
         33 |        133        1.33       83.36
         34 |        117        1.17       84.53
         35 |        227        2.27       86.80
         36 |        116        1.16       87.96
         37 |         83        0.83       88.79
         38 |         99        0.99       89.78
         39 |         69        0.69       90.47
         40 |        318        3.18       93.65
         41 |         45        0.45       94.10
         42 |         72        0.72       94.82
         43 |         42        0.42       95.24
         44 |         38        0.38       95.62
         45 |         64        0.64       96.26
         46 |         22        0.22       96.48
         47 |         37        0.37       96.85
         48 |         30        0.30       97.15
         49 |         12        0.12       97.27
         50 |         92        0.92       98.19
         51 |         15        0.15       98.34
         52 |         13        0.13       98.47
         53 |         11        0.11       98.58
         54 |         18        0.18       98.76
         55 |         16        0.16       98.92
         56 |          5        0.05       98.97
         57 |          5        0.05       99.02
         58 |         11        0.11       99.13
         59 |          5        0.05       99.18
         60 |         25        0.25       99.43
         61 |          5        0.05       99.48
         62 |          3        0.03       99.51
         63 |          4        0.04       99.55
         64 |          7        0.07       99.62
         65 |          3        0.03       99.65
         66 |          4        0.04       99.69
         67 |          3        0.03       99.72
         68 |          1        0.01       99.73
         69 |          3        0.03       99.76
         70 |          6        0.06       99.82
         72 |          2        0.02       99.84
         74 |          2        0.02       99.86
         76 |          1        0.01       99.87
         78 |          1        0.01       99.88
         80 |          3        0.03       99.91
         82 |          1        0.01       99.92
         90 |          1        0.01       99.93
         95 |          1        0.01       99.94
         99 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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