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List R={x, y, z, 2.7, 3.8, 5.5}
List S={x, y, z, -2.7, -3.8, -5.5}
If the average (arithmetic mean) of the 6 numbers in list R is r and the average of the 6 numbers in list S is s, then r-s is the average of which of the following lists?
List S={x, y, z, -2.7, -3.8, -5.5}
If the average (arithmetic mean) of the 6 numbers in list R is r and the average of the 6 numbers in list S is s, then r-s is the average of which of the following lists?
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· 相关考点
5.2.1 平均值
5.2.1 平均值
以上解析由 考满分老师提供。
