Summary statistics for b_1_c18_33 variable in snf_rollup2540_96_2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_33 | 3,270 33213.81 208714.4 -24012 1.13e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018