Summary statistics for b_1_c18_34 variable in snf_rollup2540_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_34 | 76 701740.5 4034087 -5372 3.52e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018