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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          1        0.01        0.01
          1 |      1,183       11.83       11.84
          2 |        686        6.86       18.70
          3 |          5        0.05       18.75
          4 |          1        0.01       18.76
          5 |         10        0.10       18.86
          6 |         58        0.58       19.44
          7 |         39        0.39       19.83
          8 |        236        2.36       22.19
          9 |      1,350       13.50       35.69
          . |      6,431       64.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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