Frequencies for first 10,000 rows of psum variable in namcs1998 dataset :

 psu marker |
   (masked) |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,236       12.36       12.36
          2 |      1,235       12.35       24.71
          3 |      1,034       10.34       35.05
          4 |      1,159       11.59       46.64
          5 |         89        0.89       47.53
          6 |        189        1.89       49.42
          7 |        109        1.09       50.51
          8 |        178        1.78       52.29
          9 |        137        1.37       53.66
         10 |        302        3.02       56.68
         11 |        109        1.09       57.77
         12 |        120        1.20       58.97
         13 |         95        0.95       59.92
         14 |        219        2.19       62.11
         15 |        202        2.02       64.13
         16 |        130        1.30       65.43
         17 |        205        2.05       67.48
         18 |         17        0.17       67.65
         20 |        148        1.48       69.13
         21 |        270        2.70       71.83
         22 |        229        2.29       74.12
         23 |        108        1.08       75.20
         24 |        141        1.41       76.61
         25 |         48        0.48       77.09
         26 |        143        1.43       78.52
         27 |        129        1.29       79.81
         28 |        114        1.14       80.95
         29 |         60        0.60       81.55
         30 |         52        0.52       82.07
         31 |        237        2.37       84.44
         32 |         84        0.84       85.28
         33 |        128        1.28       86.56
         34 |         26        0.26       86.82
         35 |        149        1.49       88.31
         36 |        134        1.34       89.65
         37 |         99        0.99       90.64
         38 |         44        0.44       91.08
         40 |         45        0.45       91.53
         41 |        117        1.17       92.70
         42 |        221        2.21       94.91
         43 |         23        0.23       95.14
         44 |        182        1.82       96.96
         45 |        145        1.45       98.41
         46 |        159        1.59      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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