Summary statistics for tchnlgst_bs_ba_dgr_cnt variable in pos2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
tchnlgst_b~t |    122,973    .0062284    .4019662          0        123

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