[理工] 估計值
請問一下第二題的alpha_hat為什麼是這樣算?
https://i.imgur.com/51YzNx6.jpg
![](https://i.imgur.com/51YzNx6.jpg)
![](https://i.imgur.com/skZG77Z.jpg)
![](https://i.imgur.com/vZ9EhTV.jpg)
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02/14 00:02,
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02/14 00:02, 1F
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02/14 00:23,
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02/14 00:23, 2F
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02/14 00:23,
2年前
, 3F
02/14 00:23, 3F