Summary statistics for b_1_c0_18 variable in snf_rollup2540_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c0_18 | 1,851 1148832 1180980 -1203282 1.07e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018