Summary statistics for s3_1_c22_3 variable in snf_rollup2540_96_2000 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- s3_1_c22_3 | 6,996 61.51889 47.20049 .16 1017 by Jean Roth , jroth@nber.org , 17 Feb 2018