The following summary statistics and graphs reflect the commute times (in minutes) for a random sample of Chicagoans. 100.0% maximum 51 THIS IS A FINAL EXAM 99.5% 51 97.5% 50.35 Mean 31.75 90.0% 41.7 Std Dev 8.5471587 75.0% quartile 38.5 Std Err Mean 1.1852776 50.0% median 31.25 Upper 95% Mean 34.129544 25.0% quartile 24.25 Lower 95% Mean 29.370456 10.0% 21 N 52 15 20 25 30 35 40 45 50 55 2.5% 19 0.5% 19 0.0% minimum 19 The most accurate measure of center is 31.25 31.75 8.55 14.25