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                            ![](http://www.rhinostudio.cn/files/course/2019/01-31/2314328dc0c9678407.png)

## **Weighted Average 加權平均值**

![](http://www.rhinostudio.cn/files/course/2020/05-07/120018228ee6422417.png)

經由【翟紅號】網友的提醒，加權平均數的算法應該是原數列的數值 乘以 所占比重 ，并不需要除數列的長度 ?，但是要求比重的 總和 必須為1，如果不是1 ，就會自動將其映射到0-1區間 ，等同與將其結果 除 比重的總和
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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