Summary statistics for spch_pthlgst_audlgst_cnt variable in pos2001 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
sp~dlgst_cnt |     99,429    .2530084    20.35415          0    5000.01

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