Summary statistics for mfr_dt variable in demo2005q3 dataset :

    Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
      mfr_dt |     75578    2.01e+07    224430.2   1.91e+07   5.20e+07

by Jean Roth , jroth@nber.org , 18 Dec 2015