Frequencies for first 10,000 rows of prov3505 variable in pos1992 dataset :

       srv: |
xray-onsite |
       -non |
  residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,366       73.66       73.66
          N |      2,570       25.70       99.36
          Y |         64        0.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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