Frequencies for first 10,000 rows of prov2305 variable in pos1993 dataset :

 spec: oral |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,608       96.08       96.08
          N |        269        2.69       98.77
          Y |        123        1.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016