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考拉女士 · 2020年02月03日

问一道题:NO.PZ2018062016000105 [ CFA I ]

问题如下:

If analyst collect a random sample of 100 students in school with 1000 students, and we found the sample mean heights under 1.7 centimeters, but the population mean heights is 1.8 centimeters. A friend has asked you to explain the differences between sample mean and population mean. Which of the following will you most likely include in your explanation?

选项:

A.

because of sampling error

B.

because of sampling distribution

C.

because of systematic sampling

解释:

A is correct, because any difference between the sample mean and the population mean is called sampling error.

老师,请问这个知识点是在哪里讲的?没有印象

1 个答案
已采纳答案

星星_品职助教 · 2020年02月03日

同学你好,

这个知识点是sampling error的定义,在Sampling and estimation最开始讲的。

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