Summary statistics for s3_1_c13_3 variable in snf_rollup2540_96_2005 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- s3_1_c13_3 | 54 135.6839 108.3713 6.5 595.67 by Jean Roth , jroth@nber.org , 17 Feb 2018