Summary statistics for b_1_c18_18 variable in snf_rollup2540_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_18 | 2,098 2787660 2883989 -457123 2.54e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018