Frequencies for first 10,000 rows of cstratm variable in namcs2002 dataset :

  Clustered |
PSU stratum |
     marker |
   (masked) |      Freq.     Percent        Cum.
------------+-----------------------------------
   2.01e+07 |         26        0.26        0.26
   2.01e+07 |        253        2.53        2.79
   2.01e+07 |         14        0.14        2.93
   2.01e+07 |        284        2.84        5.77
   2.01e+07 |        134        1.34        7.11
   2.01e+07 |         74        0.74        7.85
   2.01e+07 |         33        0.33        8.18
   2.01e+07 |         77        0.77        8.95
   2.01e+07 |         84        0.84        9.79
   2.01e+07 |        113        1.13       10.92
   2.01e+07 |         85        0.85       11.77
   2.01e+07 |         49        0.49       12.26
   2.01e+07 |         42        0.42       12.68
   2.01e+07 |        107        1.07       13.75
   2.02e+07 |        149        1.49       15.24
   2.02e+07 |        132        1.32       16.56
   2.02e+07 |        186        1.86       18.42
   2.02e+07 |        140        1.40       19.82
   2.02e+07 |         33        0.33       20.15
   2.02e+07 |         34        0.34       20.49
   2.02e+07 |         76        0.76       21.25
   2.02e+07 |         27        0.27       21.52
   2.02e+07 |         57        0.57       22.09
   2.02e+07 |         59        0.59       22.68
   2.02e+07 |          2        0.02       22.70
   2.02e+07 |         55        0.55       23.25
   2.02e+07 |         44        0.44       23.69
   2.02e+07 |         26        0.26       23.95
   2.03e+07 |         28        0.28       24.23
   2.03e+07 |         31        0.31       24.54
   2.03e+07 |         29        0.29       24.83
   2.03e+07 |        109        1.09       25.92
   2.03e+07 |         41        0.41       26.33
   2.03e+07 |         39        0.39       26.72
   2.03e+07 |         16        0.16       26.88
   2.03e+07 |          5        0.05       26.93
   2.03e+07 |         69        0.69       27.62
   2.03e+07 |         62        0.62       28.24
   2.03e+07 |         12        0.12       28.36
   2.03e+07 |         51        0.51       28.87
   2.03e+07 |         23        0.23       29.10
   2.03e+07 |         61        0.61       29.71
   2.03e+07 |         88        0.88       30.59
   2.04e+07 |        308        3.08       33.67
   2.04e+07 |        127        1.27       34.94
   2.04e+07 |        125        1.25       36.19
   2.04e+07 |        168        1.68       37.87
   2.04e+07 |         47        0.47       38.34
   2.04e+07 |         14        0.14       38.48
   2.04e+07 |         19        0.19       38.67
   2.04e+07 |        101        1.01       39.68
   2.04e+07 |         81        0.81       40.49
   2.04e+07 |         63        0.63       41.12
   2.04e+07 |         61        0.61       41.73
   2.04e+07 |         60        0.60       42.33
   2.04e+07 |         51        0.51       42.84
   2.04e+07 |         43        0.43       43.27
   2.04e+07 |        114        1.14       44.41
   4.01e+07 |        648        6.48       50.89
   4.02e+07 |      1,265       12.65       63.54
   4.03e+07 |      2,658       26.58       90.12
   4.04e+07 |        988        9.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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