Summary statistics for b_1_c18_21 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_21 | 4,801 27467.66 154343.5 -34012 1.01e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018