试题与答案

甲地调查发现100名12岁儿童身高的标准误是2.4cm,乙地调查发现100名12岁儿

题型:单项选择题 A2型题

题目:

甲地调查发现100名12岁儿童身高的标准误是2.4cm,乙地调查发现100名12岁儿童身高的标准误是1.3cm,说明()

A.乙地调查中测量身高的准确程度比甲地好

B.甲地调查得到的样本均数变异程度比乙地大

C.甲地测量身高时平均误差为2.4cm,乙地测量身高时平均误差为1.3cm

D.甲地测量身高时最大误差为2.4cm,乙地测量身高时最大误差为1.3cm

E.甲地测量身高时最小误差为2.4cm,乙地测量身高时最小误差为1.3cm

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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