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楼主: zlw891230
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求问置信区间与预测区间》。。。。。。 |
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本科生 57%
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回帖推荐If you ask the difference in regression analysis, then think it the following simple way.
Y=X*beta+delta
Confidence interval considers only the delta.
When you want to predict, you estimate beta first. Since beta is a linear combination of Ys, beta can be looked as random variable. The prediction Y=X*beta_hat+delta. Now you should consider the variance brought by delta and beta.
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