7 Two maths classes results are to be compared using a back to back stem and leaf plot. The results are given below Class A: 51, 60, 65, 73, 73, 76,

76, 78, 79, 83, 86, 87, 90, 92 Class B: 52, 52, 53, 54, 57, 58, 63, 67, 67, 70, 71, 83, 86, 98