Summary statistics for b_1_c18_23 variable in snf_rollup2540_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_23 | 3,855 34114.59 53717.95 -5493 1001530 by Jean Roth , jroth@nber.org , 17 Feb 2018