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Each day for 25 days, the number of people who used a certain library that day was recorded. The standard deviation of the 25 recorded numbers is 12.

Which of the following statements individually provide(s) sufficient additional information to determine the mean of the 25 recorded numbers?

Indicate all such statements.

A.The median of the recorded numbers is 49.
B.One of the recorded numbers, 45, is $$\frac{1}{3}$$ standard deviation below the mean.
C.More than 50 percent of the recorded numbers are between 37 and 61.

B显示答案

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· 相关考点

5.3.1 数据分布的描述

以上解析由考满分老师提供。

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