Frequencies for first 10,000 rows of segmentid variable in ma2018 dataset :

 Segment ID |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |          1        0.01        0.01
          0 |      9,341       93.41       93.42
          1 |        369        3.69       97.11
          2 |        182        1.82       98.93
          3 |         46        0.46       99.39
          4 |         28        0.28       99.67
          5 |         27        0.27       99.94
          6 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org ,