Frequencies for trim variable in drg1984 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 |         11        2.31       35.43
        240 |         21        4.40       39.83
        250 |         27        5.66       45.49
        260 |         53       11.11       56.60
        270 |         43        9.01       65.62
        280 |         37        7.76       73.38
        290 |         29        6.08       79.45
        300 |          8        1.68       81.13
        310 |         12        2.52       83.65
        320 |          9        1.89       85.53
        330 |         15        3.14       88.68
        340 |         10        2.10       90.78
        350 |          9        1.89       92.66
        360 |         11        2.31       94.97
        370 |          6        1.26       96.23
        380 |          7        1.47       97.69
        390 |          2        0.42       98.11
        400 |          2        0.42       98.53
        410 |          3        0.63       99.16
        420 |          1        0.21       99.37
        430 |          1        0.21       99.58
        440 |          2        0.42      100.00
------------+-----------------------------------
      Total |        477      100.00

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