Frequencies for first 10,000 rows of umbstate variable in natlterr2003 dataset :

   Mother's |
Birth State |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
         AK |          1        0.01        0.01
         AR |          1        0.01        0.02
         AZ |          2        0.02        0.04
         CA |         13        0.13        0.17
         CC |          3        0.03        0.20
         CO |          1        0.01        0.21
         CT |         55        0.55        0.76
         CU |         13        0.13        0.89
         DC |          3        0.03        0.92
         DE |          4        0.04        0.96
         FL |         27        0.27        1.23
         GA |          6        0.06        1.29
         HI |          1        0.01        1.30
         IA |          3        0.03        1.33
         IL |         82        0.82        2.15
         IN |          6        0.06        2.21
         KS |          2        0.02        2.23
         KY |          2        0.02        2.25
         LA |          3        0.03        2.28
         MA |         68        0.68        2.96
         MD |          5        0.05        3.01
         MI |          4        0.04        3.05
         MN |          1        0.01        3.06
         MO |          1        0.01        3.07
         MS |          1        0.01        3.08
         MX |         20        0.20        3.28
         NC |          4        0.04        3.32
         NJ |        178        1.78        5.10
         NY |        475        4.75        9.85
         OH |         12        0.12        9.97
         OK |          1        0.01        9.98
         OR |          1        0.01        9.99
         PA |         50        0.50       10.49
         PR |      8,523       85.23       95.72
         RI |          1        0.01       95.73
         SC |          1        0.01       95.74
         TN |          2        0.02       95.76
         TX |         12        0.12       95.88
         VA |          5        0.05       95.93
         VI |          3        0.03       95.96
         WA |          4        0.04       96.00
         WI |         10        0.10       96.10
         WV |          1        0.01       96.11
         YY |        389        3.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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