Frequencies for first 10,000 rows of psum variable in namcs1995 dataset :

 psu marker |
   (masked) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        884        8.84        8.84
          2 |      1,563       15.63       24.47
          3 |      1,052       10.52       34.99
          4 |        889        8.89       43.88
          5 |         56        0.56       44.44
          6 |         64        0.64       45.08
          7 |        276        2.76       47.84
          8 |        159        1.59       49.43
          9 |        117        1.17       50.60
         10 |        153        1.53       52.13
         11 |        141        1.41       53.54
         12 |        160        1.60       55.14
         13 |        104        1.04       56.18
         14 |        126        1.26       57.44
         15 |        154        1.54       58.98
         16 |         26        0.26       59.24
         17 |         52        0.52       59.76
         18 |        107        1.07       60.83
         19 |         18        0.18       61.01
         20 |        211        2.11       63.12
         21 |        180        1.80       64.92
         22 |         90        0.90       65.82
         23 |        188        1.88       67.70
         24 |        113        1.13       68.83
         25 |        291        2.91       71.74
         26 |        137        1.37       73.11
         27 |         63        0.63       73.74
         28 |         99        0.99       74.73
         29 |        213        2.13       76.86
         30 |        125        1.25       78.11
         31 |         29        0.29       78.40
         32 |         10        0.10       78.50
         33 |        296        2.96       81.46
         34 |        114        1.14       82.60
         35 |        286        2.86       85.46
         36 |         11        0.11       85.57
         37 |        181        1.81       87.38
         38 |         66        0.66       88.04
         39 |         20        0.20       88.24
         40 |        217        2.17       90.41
         41 |        179        1.79       92.20
         42 |        107        1.07       93.27
         43 |        122        1.22       94.49
         44 |         33        0.33       94.82
         45 |        145        1.45       96.27
         46 |         95        0.95       97.22
         47 |         51        0.51       97.73
         48 |        105        1.05       98.78
         49 |        122        1.22      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016