Summary statistics for e_a_18_c1_00303 variable in hcris2552_96_1996 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- e_a_18~00303 | 1,136 4290077 7440178 335 5.73e+07 by Jean Roth , jroth@nber.org , 6 Sep 2018