Summary statistics for a_c6_1 variable in snf_rollup2540_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_1 | 9,715 -65848.07 333165.6 -1.62e+07 7094065 by Jean Roth , jroth@nber.org , 17 Feb 2018