1. The raw scores below show the number of miles completed by ten participants in a marathon: 10 9 5 17 3 12 4 1 9 6 Calculate: i. The range ii. The variance iii. The standard deviation Show your work 2. For the following simple frequency distribution data: ----------------------------------------------------- x f ---------------------------- 7 4 6 4 5 7 4 8 3 6 2 5 1 6 ------- N = 40 Find: i. The variance ii. The standard deviation Show your work