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

     Weight |
 Code-Truck |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        278        2.78        2.78
          1 |      1,180       11.80       14.58
          2 |        695        6.95       21.53
          3 |          3        0.03       21.56
          5 |          7        0.07       21.63
          6 |         53        0.53       22.16
          7 |         15        0.15       22.31
          8 |        103        1.03       23.34
          9 |      1,848       18.48       41.82
          . |      5,818       58.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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