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

      TRUCK |
WEIGHT CODE |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,030       10.30       10.30
          2 |      1,292       12.92       23.22
          3 |         77        0.77       23.99
          4 |         21        0.21       24.20
          5 |         10        0.10       24.30
          6 |         40        0.40       24.70
          7 |         85        0.85       25.55
          8 |        405        4.05       29.60
          9 |        445        4.45       34.05
          . |      6,595       65.95      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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