Summary statistics for mdcl_scl_workr_vlntr_cnt variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_~tr_cnt |      4,807    .0691221    .7199044          0         28

by Jean Roth , jroth@nber.org , 20 Apr 2019