Summary statistics for s3_1_c19_3 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- s3_1_c19_3 | 6,386 45.56812 53.5536 1 1347 by Jean Roth , jroth@nber.org , 17 Feb 2018