Frequencies for first 10,000 rows of cstratm variable in namcs2004 dataset :

  clustered |
psu stratum |
     marker |
   (masked) |      Freq.     Percent        Cum.
------------+-----------------------------------
   2.01e+07 |         97        0.97        0.97
   2.01e+07 |         33        0.33        1.30
   2.01e+07 |         78        0.78        2.08
   2.01e+07 |        183        1.83        3.91
   2.01e+07 |         50        0.50        4.41
   2.01e+07 |         29        0.29        4.70
   2.01e+07 |         12        0.12        4.82
   2.01e+07 |         83        0.83        5.65
   2.01e+07 |        159        1.59        7.24
   2.01e+07 |         69        0.69        7.93
   2.01e+07 |         75        0.75        8.68
   2.01e+07 |         68        0.68        9.36
   2.01e+07 |         59        0.59        9.95
   2.01e+07 |         24        0.24       10.19
   2.01e+07 |         52        0.52       10.71
   2.02e+07 |         50        0.50       11.21
   2.02e+07 |         61        0.61       11.82
   2.02e+07 |         68        0.68       12.50
   2.02e+07 |         43        0.43       12.93
   2.02e+07 |         64        0.64       13.57
   2.02e+07 |          7        0.07       13.64
   2.02e+07 |        103        1.03       14.67
   2.02e+07 |         14        0.14       14.81
   2.02e+07 |         66        0.66       15.47
   2.02e+07 |         25        0.25       15.72
   2.02e+07 |         52        0.52       16.24
   2.02e+07 |        104        1.04       17.28
   2.02e+07 |         40        0.40       17.68
   2.02e+07 |         38        0.38       18.06
   2.02e+07 |         59        0.59       18.65
   2.03e+07 |         71        0.71       19.36
   2.03e+07 |         44        0.44       19.80
   2.03e+07 |        103        1.03       20.83
   2.03e+07 |        116        1.16       21.99
   2.03e+07 |         11        0.11       22.10
   2.03e+07 |         67        0.67       22.77
   2.03e+07 |         52        0.52       23.29
   2.03e+07 |         46        0.46       23.75
   2.03e+07 |         71        0.71       24.46
   2.03e+07 |         27        0.27       24.73
   2.03e+07 |        183        1.83       26.56
   2.03e+07 |         67        0.67       27.23
   2.03e+07 |         12        0.12       27.35
   2.03e+07 |         88        0.88       28.23
   2.03e+07 |         37        0.37       28.60
   2.04e+07 |        182        1.82       30.42
   2.04e+07 |         39        0.39       30.81
   2.04e+07 |         87        0.87       31.68
   2.04e+07 |        113        1.13       32.81
   2.04e+07 |         47        0.47       33.28
   2.04e+07 |         38        0.38       33.66
   2.04e+07 |        115        1.15       34.81
   2.04e+07 |         73        0.73       35.54
   2.04e+07 |         18        0.18       35.72
   2.04e+07 |        120        1.20       36.92
   2.04e+07 |        106        1.06       37.98
   2.04e+07 |         71        0.71       38.69
   2.04e+07 |        114        1.14       39.83
   2.04e+07 |         53        0.53       40.36
   4.01e+07 |      1,010       10.10       50.46
   4.02e+07 |      1,719       17.19       67.65
   4.03e+07 |      2,186       21.86       89.51
   4.04e+07 |      1,049       10.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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