pooled estimator的知识点或者考法能否讲一下
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No.PZ2018062016000141 (选择题)
来源: 品职出题
Which of the following statements on a pooled estimator most appropriate?
您的回答, 正确答案是: B
A
不正确It's an equality of the variances of two normally distributed populations.
B
It's an estimate drawn from the combination of two different samples.
C
It's only be used in t-test.
数据统计(全部)
做对次数: 847
做错次数: 640
正确率: 56.96%
数据统计(个人)
做对次数: 0
做错次数: 1
正确率: 0.00%
解析
B is correct. A pooled estimate is an estimate drawn from the combination of two different samples. It's used when testing the concerning difference between means.
