Summary statistics for s3_1_c16_3 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- s3_1_c16_3 | 9,545 573.5696 964.6043 .99 37771 by Jean Roth , jroth@nber.org , 17 Feb 2018