Frequencies for trim variable in drg1985 dataset :

       Trim |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         10        2.10        2.10
         20 |          1        0.21        2.31
         30 |          6        1.26        3.56
         40 |          6        1.26        4.82
         50 |          2        0.42        5.24
         60 |          2        0.42        5.66
         70 |          8        1.68        7.34
         80 |         10        2.10        9.43
         90 |         12        2.52       11.95
        100 |          8        1.68       13.63
        110 |          9        1.89       15.51
        120 |          5        1.05       16.56
        130 |          4        0.84       17.40
        140 |          6        1.26       18.66
        150 |         12        2.52       21.17
        160 |          3        0.63       21.80
        170 |          8        1.68       23.48
        180 |         11        2.31       25.79
        190 |          9        1.89       27.67
        200 |          8        1.68       29.35
        210 |          7        1.47       30.82
        220 |         11        2.31       33.12
        230 |         10        2.10       35.22
        240 |         12        2.52       37.74
        250 |          7        1.47       39.20
        260 |         14        2.94       42.14
        270 |         27        5.66       47.80
        280 |         46        9.64       57.44
        290 |         46        9.64       67.09
        300 |         36        7.55       74.63
        310 |         25        5.24       79.87
        320 |          6        1.26       81.13
        330 |         13        2.73       83.86
        340 |          8        1.68       85.53
        350 |         16        3.35       88.89
        360 |          9        1.89       90.78
        370 |          9        1.89       92.66
        380 |         11        2.31       94.97
        390 |          6        1.26       96.23
        400 |          7        1.47       97.69
        410 |          2        0.42       98.11
        420 |          2        0.42       98.53
        430 |          3        0.63       99.16
        440 |          1        0.21       99.37
        450 |          1        0.21       99.58
        460 |          2        0.42      100.00
------------+-----------------------------------
      Total |        477      100.00

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