Summary statistics for te dataset :

by Jean Roth , jroth@nber.org , 15 Oct 2018

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      applno |     17,315    111896.4    69003.16       3444     211483
   productno |     17,315    2.000173    1.575503          1         30
marketings~d |     17,315    1.000173    .0131621          1          2
   tecodestr |          0
      tecode |     17,315    15.35316    40.59423          1        999

by Jean Roth , jroth@nber.org , 15 Oct 2018