Summary statistics for a_c6_4 variable in hosp_rollup2552_96_2007 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_4 | 4,072 310384.8 2833328 -1.35e+07 1.02e+08 by Jean Roth , jroth@nber.org , 21 Apr 2018