Summary statistics for impact1987 dataset :

by Jean Roth , jroth@nber.org , 17 Mar 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
    provider |          0
       fyear |      4,395        1987           0       1987       1987
      tacmiv |      4,395    1.147826    .1501941      .6715      2.151
   wageindex |      4,395    1.095648    .1857877   .8245173   1.808572
       ppsid |      4,395      261736    146943.1      10001     530032
-------------+---------------------------------------------------------
      caseta |          0
  sum_rltwts |          0

by Jean Roth , jroth@nber.org , 17 Mar 2016