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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         27        0.27        0.27
          1 |      1,249       12.49       12.76
          2 |        678        6.78       19.54
          3 |          6        0.06       19.60
          4 |          3        0.03       19.63
          5 |         10        0.10       19.73
          6 |         46        0.46       20.19
          7 |         18        0.18       20.37
          8 |        203        2.03       22.40
          9 |      1,491       14.91       37.31
          . |      6,269       62.69      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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