Frequencies for first 10,000 rows of wgtcd_tr variable in person dataset :

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,702       17.02       17.02
          2 |        642        6.42       23.44
          3 |         15        0.15       23.59
          4 |          6        0.06       23.65
          5 |          4        0.04       23.69
          6 |         47        0.47       24.16
          7 |         49        0.49       24.65
          8 |        281        2.81       27.46
          9 |        627        6.27       33.73
          . |      6,627       66.27      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016