Summary statistics for b_1_c18_47 variable in snf_rollup2540_96_2002 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_47 | 102 1059810 2455842 -24062 1.64e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018