Frequencies for first 10,000 rows of race variable in mort1975 dataset :

       race |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          2        0.02        0.02
          1 |      7,461       74.61       74.63
          2 |      2,298       22.98       97.61
          3 |        145        1.45       99.06
          4 |         28        0.28       99.34
          5 |         21        0.21       99.55
          6 |          6        0.06       99.61
          7 |         23        0.23       99.84
          8 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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