Frequencies for first 10,000 rows of exprmt_rsrch_cndctd_sw variable in pos2018 dataset :

Experimenta |
 l Research |
  Conducted |
  Indicator |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      7,570       75.70       75.70
          N |      2,413       24.13       99.83
          Y |         17        0.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Feb 2019