Frequencies for first 10,000 rows of prov3500 variable in pos1992 dataset :

       srv: |
xray-onsite |
 -residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,366       73.66       73.66
          N |        549        5.49       79.15
          Y |      2,085       20.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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