Summary statistics for b_1_c18_22 variable in snf_rollup2540_96_2001 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_22 | 10,641 17674.36 39848.2 -15156 2675641 by Jean Roth , jroth@nber.org , 17 Feb 2018