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The standard deviation of m numerical data $$ x_{1}, x_{2}, x_{3}, ..., x_{n}$$, With mean $$\bar{x}$$ is equal to $$\sqrt{\frac{S}{n}}$$, where S is the sum of the squared differences $$(x_{i}-\bar{x})$$, for 1 ≤ i ≤ n.
List L consists of 80 values. List M consists of the values in L and the value 92, and the mean of the values in M is 12. If the standard deviation of the values in L is 0, what is the standard deviation of the values in M?
List L consists of 80 values. List M consists of the values in L and the value 92, and the mean of the values in M is 12. If the standard deviation of the values in L is 0, what is the standard deviation of the values in M?
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· 相关考点
5.2.9 标准差
5.2.9 标准差
以上解析由 考满分老师提供。
