Frequencies for first 10,000 rows of psum variable in namcs1999 dataset :

 psu marker |
   (masked) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,251       12.51       12.51
          2 |        814        8.14       20.65
          3 |      1,227       12.27       32.92
          4 |      1,630       16.30       49.22
          5 |        119        1.19       50.41
          6 |         20        0.20       50.61
          7 |        171        1.71       52.32
          8 |        354        3.54       55.86
          9 |        168        1.68       57.54
         10 |        175        1.75       59.29
         11 |        154        1.54       60.83
         12 |         17        0.17       61.00
         13 |        266        2.66       63.66
         14 |         85        0.85       64.51
         15 |        101        1.01       65.52
         16 |        180        1.80       67.32
         17 |        167        1.67       68.99
         18 |         41        0.41       69.40
         19 |         23        0.23       69.63
         20 |         67        0.67       70.30
         21 |        189        1.89       72.19
         22 |        203        2.03       74.22
         23 |        229        2.29       76.51
         24 |         41        0.41       76.92
         26 |         98        0.98       77.90
         27 |         46        0.46       78.36
         28 |        139        1.39       79.75
         29 |        130        1.30       81.05
         30 |        238        2.38       83.43
         31 |         92        0.92       84.35
         32 |         25        0.25       84.60
         34 |         16        0.16       84.76
         35 |        113        1.13       85.89
         36 |        199        1.99       87.88
         37 |        190        1.90       89.78
         38 |        124        1.24       91.02
         39 |         55        0.55       91.57
         40 |        254        2.54       94.11
         41 |         40        0.40       94.51
         42 |        227        2.27       96.78
         43 |         20        0.20       96.98
         44 |        187        1.87       98.85
         45 |         25        0.25       99.10
         46 |         90        0.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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