试题与答案

在抽样研究中,若口为定值,随着样本例数逐渐增大,则A.样本标准差减小B.当"趋近无穷

题型:单项选择题

题目:

在抽样研究中,若口为定值,随着样本例数逐渐增大,则

A.样本标准差减小
B.当"趋近无穷大时,标准差降至0
C.标准误减小
D.标准误波动范围增大
E.标准误、标准差都不改变

答案:

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参考答案:D

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