Frequencies for first 10,000 rows of econdp_7 variable in linkco1991us_num dataset :

  Part/line |
  number on |
certificate |
          7 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.01        0.01
          2 |          2        0.02        0.03
          3 |          2        0.02        0.05
          4 |          4        0.04        0.09
          5 |          2        0.02        0.11
          6 |        108        1.08        1.19
          . |      9,881       98.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015