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                正態分布顯然是一種可取的權重分配模式。 ![](https://box.kancloud.cn/2015-08-08_55c5b40648a46.png) 在圖形上,正態分布是一種鐘形曲線,越接近中心,取值越大,越遠離中心,取值越小。 計算平均值的時候,我們只需要將"中心點"作為原點,其他點按照其在正態曲線上的位置,分配權重,就可以得到一個加權平均值。
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