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Which of the following is(are) NOT point estimator(s)? 答案: s; m; a

Which of the following is(are) NOT point estimator(s)?

答案: s;
m;
a

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相关试题

Which of the following is an example of probability sampling?

答案: simple random sampling;
stratified simple random sampling;
systematic sampling;
cluster sampling

Which of the following is an example of non probability sampling?

答案: convenience sampling;
judgment sampling

The error that occurs because a sample， and not the entire population， is used to estimate a population parameter is a sampling error.

答案: 正确

Cluster sampling is a non probability sampling method.

答案: 错误

A method of selecting a sample by randomly selecting the first element and then selecting every Kth element thereafter is stratified simple random sampling

答案: 错误

In a sample survey， it is common practice to use a t value of (when approximating a 95% confidence interval)

答案: 错误

A sampling unit must have one element.

答案: 错误

Conclusions drawn from a sample survey apply to any population.

答案: 错误

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