Frequencies for first 10,000 rows of uhourse variable in morg09 dataset :

     (e&dp) |
Usual hours |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          3        0.03        0.03
          1 |          2        0.02        0.05
          2 |          5        0.05        0.10
          3 |          3        0.03        0.13
          4 |          9        0.09        0.22
          5 |         13        0.13        0.35
          6 |         17        0.17        0.52
          7 |          4        0.04        0.56
          8 |         24        0.24        0.80
          9 |          4        0.04        0.84
         10 |         51        0.51        1.35
         11 |          5        0.05        1.40
         12 |         41        0.41        1.81
         13 |          3        0.03        1.84
         14 |          7        0.07        1.91
         15 |         58        0.58        2.49
         16 |         28        0.28        2.77
         17 |          4        0.04        2.81
         18 |         16        0.16        2.97
         19 |          6        0.06        3.03
         20 |        206        2.06        5.09
         21 |          7        0.07        5.16
         22 |          7        0.07        5.23
         23 |          4        0.04        5.27
         24 |         59        0.59        5.86
         25 |        117        1.17        7.03
         26 |          6        0.06        7.09
         27 |          8        0.08        7.17
         28 |         13        0.13        7.30
         29 |          2        0.02        7.32
         30 |        170        1.70        9.02
         32 |        100        1.00       10.02
         33 |         10        0.10       10.12
         34 |          5        0.05       10.17
         35 |        187        1.87       12.04
         36 |         46        0.46       12.50
         37 |         29        0.29       12.79
         38 |         98        0.98       13.77
         39 |          7        0.07       13.84
         40 |      3,027       30.27       44.11
         41 |          3        0.03       44.14
         42 |         25        0.25       44.39
         43 |          8        0.08       44.47
         44 |          9        0.09       44.56
         45 |        214        2.14       46.70
         46 |         12        0.12       46.82
         47 |          3        0.03       46.85
         48 |         34        0.34       47.19
         49 |          6        0.06       47.25
         50 |        341        3.41       50.66
         52 |          2        0.02       50.68
         53 |          1        0.01       50.69
         54 |          4        0.04       50.73
         55 |         66        0.66       51.39
         56 |         10        0.10       51.49
         58 |          1        0.01       51.50
         59 |          1        0.01       51.51
         60 |        156        1.56       53.07
         64 |          1        0.01       53.08
         65 |         16        0.16       53.24
         66 |          1        0.01       53.25
         70 |         28        0.28       53.53
         72 |          5        0.05       53.58
         75 |          7        0.07       53.65
         76 |          1        0.01       53.66
         80 |         19        0.19       53.85
         84 |          5        0.05       53.90
         85 |          4        0.04       53.94
         90 |          2        0.02       53.96
         92 |          1        0.01       53.97
         99 |          1        0.01       53.98
          . |      4,602       46.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Mar 2017