Frequencies for first 10,000 rows of prov2305 variable in pos1997 dataset :

 spec: oral |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      9,456       94.56       94.56
          N |        396        3.96       98.52
          Y |        148        1.48      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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