Their scores: 55, 69, 83, 78, 49, 53, 90, 61, 83, 75 Mean = total sum ÷ number of quantities = 696 ÷ 10 = 69·6 Median: first put them in numerical order:
Identify the one(s) in the middle: 69 and 75 Find the (mean) average of these: 69 + 75 / 2 = 72 Mode: there are only two results the same: 83 Range = biggest number  smallest number
