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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         50        0.50        0.50
          1 |        865        8.65        9.15
          2 |        348        3.48       12.63
          4 |          6        0.06       12.69
          5 |         14        0.14       12.83
          6 |         37        0.37       13.20
          8 |         17        0.17       13.37
          9 |      4,371       43.71       57.08
          . |      4,292       42.92      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016