1. Find the arithmetic mean and range of the following data: (a) 4,7,3, 8, 2, 5, 9,4,3 (b) 85, 76, 90, 84, 39, 48, 86, 95, 81 and 75.
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Answer:
mean
a) 45
b) 759
range
a) 7
b) 56
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