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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         33        0.33        0.33
          1 |      1,193       11.93       12.26
          2 |        823        8.23       20.49
          3 |         11        0.11       20.60
          5 |         13        0.13       20.73
          6 |        106        1.06       21.79
          7 |         20        0.20       21.99
          8 |        151        1.51       23.50
          9 |      1,409       14.09       37.59
          . |      6,241       62.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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