Frequencies for first 10,000 rows of econdp_6 variable in mortterr2007 dataset :

  Part/line |
  number on |
certificate |
          6 |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |          1        0.01        0.01
          3 |         14        0.14        0.15
          4 |         64        0.64        0.79
          6 |        392        3.92        4.71
          . |      9,529       95.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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