Summary statistics for mdcl_scl_workr_vlntr_cnt variable in pos1996 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_~tr_cnt |     84,663    .0024732    .0920692          0         15

by Jean Roth , jroth@nber.org , 17 May 2017