Summary statistics for a_c6_11 variable in hosp_rollup2552_96_2009 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_11 | 4,471 -238500.9 667851 -1.69e+07 8836339 by Jean Roth , jroth@nber.org , 21 Apr 2018