Summary statistics for mdcl_drctr_cntrct_cnt variable in pos2013 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_d~t_cnt |     38,155    .1576061    7.283258          0     999.99

by Jean Roth , jroth@nber.org , 26 Jan 2016