Frequencies for first 10,000 rows of prov3500 variable in pos2002 dataset :

       srv: |
xray-onsite |
 -residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,325       73.25       73.25
          N |        486        4.86       78.11
          Y |      2,189       21.89      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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