xbar range 34.2 3 31.6 4 31.8 4 33.4 5 35 4 32.1 2 32.6 7 33.8 9 34.8 10 38.6 4 35.4 8 34 6 36 4 37.2 7 35.2 3 33.4 10 35 4 34.4 7 33.9 8 34 4