Ann scored 88, 93, 84, and 99 on 4 tests. What is her mean test score?

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问题 Ann scored 88, 93, 84, and 99 on 4 tests. What is her mean test score?

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答案91

解析 The mean is the average, so simply add the test scores and divide by 4(the total number of tests):
88 + 93 + 84 + 99 = 364
364 ÷ 4 = 91

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