Summary statistics for b_1_c18_60 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_60 | 472 196110.6 911094.9 -48 1.23e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018