Summary statistics for b_1_c18_60 variable in snf_rollup2540_96_2011 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_60 | 77 181681.2 1329679 -2175 1.17e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018