Summary statistics for a_c2_3 variable in snf_rollup2540_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_3 | 8,442 455960.2 581512.4 -64396 1.25e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018