Chapter 2  選擇“時間長度為21”的移動平均線

既然可以選擇各種各樣時間長度的移動平均線,那麼時間長度到底該設定為多少呢?在解答這個問題之前,首先要知道不同時間長度的移動平均線有什麼特點。

短期的移動平均線對價格波動十分敏感,換言之,就是非常貼近當前的價格,它的起伏十分接近K線的起伏。與之相反的是,長期的移動平均線由於分母較大,起伏會比較平緩。

為了便於大家理解,我們以下圖(圖8.2.1)的時間長度為10的簡單移動平均線(黑線)和時間長度為75的簡單移動平均線(橘線)為例,來比較一下不同時間長度移動平均線的差異。

選擇“時間長度為21”的移動平均線-Pic no.1

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