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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        297        2.97        2.97
          1 |      1,052       10.52       13.49
          2 |        707        7.07       20.56
          4 |          2        0.02       20.58
          5 |         20        0.20       20.78
          6 |         59        0.59       21.37
          7 |         15        0.15       21.52
          8 |        150        1.50       23.02
          9 |      2,244       22.44       45.46
          . |      5,454       54.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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