Frequencies for first 10,000 rows of segmentid variable in ma2019 dataset :

 Segment ID |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |          1        0.01        0.01
          0 |      9,288       92.88       92.89
          1 |        361        3.61       96.50
          2 |        250        2.50       99.00
          3 |         58        0.58       99.58
          4 |         17        0.17       99.75
          5 |         19        0.19       99.94
          6 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org ,