[機統] 推導
想請問推導過程,右式如何出來的
_ _ N _ N _
Σ(yi-Y)(yj-Y) = { Σ(yi-Y)}^2 - Σ(yi-Y)^2
i≠j i=1 i=1
感謝
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◆ From: 1.173.213.165
※ 編輯: lyndonxxx 來自: 1.173.213.165 (09/23 21:45)
推
09/23 21:46, , 1F
09/23 21:46, 1F
→
09/23 21:57, , 2F
09/23 21:57, 2F
→
09/23 21:58, , 3F
09/23 21:58, 3F
推
09/23 21:58, , 4F
09/23 21:58, 4F
→
09/23 22:02, , 5F
09/23 22:02, 5F
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09/23 22:04, , 6F
09/23 22:04, 6F
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09/23 22:09, , 7F
09/23 22:09, 7F
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09/23 22:10, , 8F
09/23 22:10, 8F
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09/23 22:11, , 9F
09/23 22:11, 9F
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09/23 22:11, , 10F
09/23 22:11, 10F
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09/23 22:12, , 11F
09/23 22:12, 11F
→
01/02 15:32,
5年前
, 12F
01/02 15:32, 12F
→
07/07 11:27,
5年前
, 13F
07/07 11:27, 13F