即样本量(sample size)
附件2 样本量字码 sample size code
根据中心极限定律以及t分布,95%置信区间的范围基本等于:sample mean
com/profiles/blogs/determining-sample-size-in-one-picture)blog注
请大神帮忙解释一下这个stata回归模型结果~感谢感谢
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