7. a. Make a back-to-back stem and leaf plot for the following test scores. Class 1: 65, 76, 78, 54, 86, 93, 45, 90, 86,
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7. a. Make a back-to-back stem and leaf plot for the following test scores. Class 1: 65, 76, 78, 54, 86, 93, 45, 90, 86,
Class 2: 74, 46, 87. 98. 43, 67, 78, 46, 95, 85. 84.76.65. 82.79,31,92 b. Which class seems to have performed better?