Frequencies for first 10,000 rows of examwi2r variable in namcs2001 dataset :

       exam |
write-in #2 |
   - recode |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,647       96.47       96.47
       1621 |          2        0.02       96.49
       8913 |          5        0.05       96.54
       8915 |          1        0.01       96.55
       8926 |        104        1.04       97.59
       8931 |          1        0.01       97.60
       8934 |         24        0.24       97.84
       8936 |         56        0.56       98.40
       8939 |        148        1.48       99.88
       9411 |          2        0.02       99.90
       9419 |          1        0.01       99.91
       9509 |          4        0.04       99.95
       9541 |          1        0.01       99.96
       9547 |          1        0.01       99.97
       9999 |          3        0.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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