Frequencies for first 10,000 rows of econdp_9 variable in mortterr2007 dataset :

  Part/line |
  number on |
certificate |
          9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          3 |          1        0.01        0.01
          4 |          2        0.02        0.03
          6 |         23        0.23        0.26
          . |      9,974       99.74      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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