Frequencies for type variable in fhouse2000 dataset :

    type of |
     format |      Freq.     Percent        Cum.
------------+-----------------------------------
          C |         13       13.68       13.68
          N |         82       86.32      100.00
------------+-----------------------------------
      Total |         95      100.00

by Jean Roth , jroth@nber.org , 10 May 2016