Summary statistics for mdcl_scl_workr_vlntr_cnt variable in pos2016 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_~tr_cnt |      6,180     .064767    .8356625          0         50

by Jean Roth , jroth@nber.org , 10 Jan 2017