Frequencies for first 10,000 rows of scopwi1r variable in namcs2007 dataset :

      scope |
write-in #1 |
    numeric |
     recode |      Freq.     Percent        Cum.
------------+-----------------------------------
         -9 |      9,873       98.73       98.73
       3142 |          5        0.05       98.78
       4513 |         15        0.15       98.93
       4523 |         84        0.84       99.77
       4524 |          4        0.04       99.81
       4823 |          1        0.01       99.82
       4921 |          1        0.01       99.83
       5421 |          2        0.02       99.85
       7021 |          4        0.04       99.89
       8020 |          1        0.01       99.90
       8026 |          1        0.01       99.91
       8630 |          1        0.01       99.92
       9999 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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