Summary statistics for a_c2_3 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_3 | 11,508 419402.5 570062.9 -16740 1.48e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018