Frequencies for first 10,000 rows of scpwi13d variable in namcs2004 dataset :

      scope |
  procedure |
write-in #1 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      9,668       96.68       96.68
        122 |          4        0.04       96.72
        162 |         22        0.22       96.94
        181 |          2        0.02       96.96
        212 |         12        0.12       97.08
        221 |         24        0.24       97.32
        291 |          1        0.01       97.33
        314 |         24        0.24       97.57
        332 |          1        0.01       97.58
        342 |          1        0.01       97.59
        422 |          2        0.02       97.61
        451 |         21        0.21       97.82
        452 |         83        0.83       98.65
        454 |          1        0.01       98.66
        482 |          1        0.01       98.67
        492 |          1        0.01       98.68
        511 |          2        0.02       98.70
        542 |          5        0.05       98.75
        563 |          1        0.01       98.76
        573 |         96        0.96       99.72
        681 |          3        0.03       99.75
        702 |         12        0.12       99.87
        802 |          7        0.07       99.94
        999 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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