Summary statistics for s2_1_c1_21 variable in hcris2552_10_2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
  s2_1_c1_21 |      6,150    4.312683    3.305247          1         13

by Jean Roth , jroth@nber.org , 19 Jan 2017