Here is the dotplot from above: Dotplot showing ratings for 76 cereals. Scale is 0 to 100. From right to left: 94 = 1 74 = 1 73 = 1 67 = 2 65 = 1 63 = 1 61 = 1 60 = 1 59 = 2 57 = 1 55 = 2 53 = 3 52 = 2 51 = 1 50 = 1 49 = 1 47 = 2 46 = 3 45 = 1 44 = 1 42 = 2 41 = 5 40 = 4 39 = 5 38 = 1 37 = 3 36 = 4 35 = 1 34 = 3 33 = 1 32 = 1 31 = 3 30 = 3 28 = 2 27 = 2 26 = 1 24 = 1 23 = 1 22 = 2 20 = 1 18 = 1 Question 3 / 5 What is a reasonable estimate for the interquartile range of the ratings? 20 40 60