Frequencies for first 10,000 rows of mrace variable in natlterr2006 dataset :

   Mother's |
     Race U |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |        265        2.65        2.65
          2 |         36        0.36        3.01
          3 |          3        0.03        3.04
          4 |        227        2.27        5.31
          5 |         87        0.87        6.18
          6 |         13        0.13        6.31
          7 |      1,143       11.43       17.74
          8 |      2,321       23.21       40.95
         18 |          1        0.01       40.96
         28 |         55        0.55       41.51
         38 |          1        0.01       41.52
         48 |          1        0.01       41.53
         58 |      1,506       15.06       56.59
         78 |        616        6.16       62.75
          . |      3,725       37.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015