Summary statistics for miper dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- st_case | 62,865 276275.3 159566.8 10001 560162 veh_no | 62,865 1.298974 .9037916 0 21 per_no | 62,865 1.018261 .2753164 1 20 year | 62,865 1999 0 1999 1999 p1 | 62,865 4.203038 8.38824 0 81 -------------+--------------------------------------------------------- p2 | 62,865 4.201543 8.38707 0 81 p3 | 62,865 4.186654 8.391375 0 81 p4 | 62,865 4.154251 8.327144 0 81 p5 | 62,865 4.17466 8.368106 0 81 p6 | 62,865 4.170047 8.329548 0 81 -------------+--------------------------------------------------------- p7 | 62,865 4.182391 8.373403 0 81 p8 | 62,865 4.179496 8.376711 0 81 p9 | 62,865 4.190678 8.374201 0 81 p10 | 62,865 4.144611 8.345996 0 81 by Jean Roth , jroth@nber.org , 18 Apr 2016