Summary statistics for b_1_c18_18 variable in snf_rollup2540_96_2008 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_18 | 1,530 2674328 2940846 -731761 2.68e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018