Summary statistics for a_c6_12 variable in hosp_rollup2552_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_12 | 2,299 -498536.2 789200.5 -1.12e+07 2353118 by Jean Roth , jroth@nber.org , 21 Apr 2018