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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         26        0.26        0.26
          1 |      1,072       10.72       10.98
          2 |        768        7.68       18.66
          3 |          7        0.07       18.73
          4 |          1        0.01       18.74
          5 |          8        0.08       18.82
          6 |         49        0.49       19.31
          7 |         32        0.32       19.63
          8 |        135        1.35       20.98
          9 |      1,754       17.54       38.52
          . |      6,148       61.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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