Frequencies for first 10,000 rows of prov3500 variable in pos2001 dataset :

       srv: |
xray-onsite |
 -residents |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,345       73.45       73.45
          N |        465        4.65       78.10
          Y |      2,190       21.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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