Frequencies for first 10,000 rows of exmwi13d variable in namcs2002 dataset :

       Exam |
write-in #1 |
  - 3 digit |      Freq.     Percent        Cum.
------------+-----------------------------------
        000 |      7,486       74.86       74.86
        753 |          3        0.03       74.89
        876 |          1        0.01       74.90
        882 |          1        0.01       74.91
        890 |          1        0.01       74.92
        891 |        212        2.12       77.04
        892 |        140        1.40       78.44
        893 |      1,707       17.07       95.51
        895 |          3        0.03       95.54
        897 |         33        0.33       95.87
        909 |          1        0.01       95.88
        913 |          1        0.01       95.89
        930 |         11        0.11       96.00
        940 |          1        0.01       96.01
        941 |         11        0.11       96.12
        950 |        341        3.41       99.53
        954 |         10        0.10       99.63
        999 |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016