Summary statistics for tchnlgst_bs_ba_dgr_cnt variable in pos1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
tchnlgst_b~t |     89,140    .0030542    .0989124          0         14

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