Frequencies for first 10,000 rows of scpwi13d variable in namcs2002 dataset :

      Scope |
  procedure |
write-in #1 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,697       96.97       96.97
        212 |          1        0.01       96.98
        221 |         50        0.50       97.48
        291 |          3        0.03       97.51
        314 |         27        0.27       97.78
        332 |          1        0.01       97.79
        422 |          2        0.02       97.81
        441 |          3        0.03       97.84
        451 |         26        0.26       98.10
        452 |         76        0.76       98.86
        454 |          1        0.01       98.87
        482 |          6        0.06       98.93
        492 |         16        0.16       99.09
        511 |          2        0.02       99.11
        542 |          1        0.01       99.12
        573 |         64        0.64       99.76
        681 |          3        0.03       99.79
        702 |         10        0.10       99.89
        887 |          2        0.02       99.91
        892 |          1        0.01       99.92
        999 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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