Summary statistics for s3_1_c19_3 variable in snf_rollup2540_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- s3_1_c19_3 | 5,107 46.62737 52.50529 1 1260 by Jean Roth , jroth@nber.org , 17 Feb 2018