Summary statistics for a_c6_7 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_7 | 1,090 -11380.69 833957 -5335544 1.64e+07 by Jean Roth , jroth@nber.org , 21 Apr 2018