Summary statistics for b_1_c18_18 variable in snf_rollup2540_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_18 | 1,760 2878132 3008586 -1860816 2.62e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018