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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         14        0.14        0.14
          1 |      1,487       14.87       15.01
          2 |        835        8.35       23.36
          3 |         11        0.11       23.47
          4 |          2        0.02       23.49
          5 |          3        0.03       23.52
          6 |         45        0.45       23.97
          7 |         41        0.41       24.38
          8 |        304        3.04       27.42
          9 |        847        8.47       35.89
          . |      6,411       64.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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