Summary statistics for b_1_c18_18 variable in snf_rollup2540_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_18 | 2,453 2778669 2731030 -65836 3.01e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018