Summary statistics for per_aux dataset : by Jean Roth , jroth@nber.org , 18 Apr 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_age1 | 800 2.94 .8644849 1 5 a_age2 | 800 4.0325 1.279058 1 6 a_age3 | 800 7.89125 2.511934 1 13 a_age4 | 800 4.59875 1.822608 1 8 a_age5 | 800 4.98125 2.323822 1 10 -------------+--------------------------------------------------------- a_age6 | 800 4.985 2.318187 1 10 a_age7 | 800 6.9275 2.432003 1 12 a_age8 | 800 3.5125 1.773069 1 7 a_age9 | 800 1.94625 .2468544 1 3 st_case | 800 430174.7 100.0974 430001 430343 -------------+--------------------------------------------------------- veh_no | 800 1.13875 .7907465 0 6 per_no | 800 1.41875 .9821427 1 10 year | 800 2011 0 2011 2011 a_ptype | 800 1.60375 .8500819 1 5 a_rest | 800 1.7275 .7755615 1 3 -------------+--------------------------------------------------------- a_alctes | 800 2.165 .9533683 1 4 a_hisp | 800 .8975 .9953553 0 2 a_rcat | 800 .46875 .5379453 0 2 a_hrace | 800 .44875 .4976776 0 1 a_eject | 800 1.075 .3384053 1 3 -------------+--------------------------------------------------------- a_perinj | 800 3.75625 2.488388 1 6 a_loc | 800 1.385 .8441954 1 4 by Jean Roth , jroth@nber.org , 18 Apr 2016