The following scores represent the final examination grades for an elementary statistics course: (5 marks) 79,...

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The following scores represent the final examination grades for an elementary statistics course: (5 marks) 79, 99, 77, 91, 81, 84,52, 52, 72,55, 64, 67, 52, 71, 75, 57, 85, 66, 65, 89, 83, 73, 64, 81, 71, 74, 54, 68, 24,3² 19, 15, 17,20 41,45, 31, 65, 42,39 a. Find the sample mean and sample median. b. Construct a stem-and-leaf plot for the examination grades in which the stems are 1, 2, 3,..9. c. Construct a relative frequency histogram. The following scores represent the final examination grades for an elementary statistics course: (5 marks) 79, 99, 77, 91, 81, 84,52, 52, 72,55, 64, 67, 52, 71, 75, 57, 85, 66, 65, 89, 83, 73, 64, 81, 71, 74, 54, 68, 24,3² 19, 15, 17,20 41,45, 31, 65, 42,39 a. Find the sample mean and sample median. b. Construct a stem-and-leaf plot for the examination grades in which the stems are 1, 2, 3,..9. c. Construct a relative frequency histogram.

Answer rating: 100% (QA)

a To find the sample mean we add up all the scores and divide by the number of scores 79 99 77 91 81 84 52 52 72 55 64 67 52 71 75 57 85 66 65 89 83 7... View the full answer