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Quantity A: n is an integer less than 1 the standard deviation of 1, 2, nQuanti
Quantity A: n is an integer less than 1 the standard deviation of 1, 2, nQuanti
游客
2024-01-12
37
管理
问题
Quantity A: n is an integer less than 1 the standard deviation of 1, 2, n
Quantity B: the standard deviation of 1, 2, 1
选项
A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案
A
解析
n为小于1的整数,那么显然1,2,n比1,2,1的分布要稀疏,更加远离平均值,因此1,2,n的标准方差比1,2,1的标准方差大,选择A。
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