Summary statistics for itm_val_num variable in snf_nmrc2540_10_2011_long datase

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
 itm_val_num | 12,567,525      665631     5027232  -6.63e+09   6.63e+09

by Jean Roth , jroth@nber.org , 19 Apr 2018