[請益] 年平均成長率的計算?已回收
假設以下題目(分別以算術平均數、幾何平均數計算)
年度 91 92 93 94 95 96 97 98 99 100
成長率 15% 18% 23% 15% 16% 20% 25% 40% 10% 12%
那麼,毫無疑問的
算術平均數:19.40%
幾何平均數:18.00%
但如果題目變為
年度 91 92 93 94 95 96 97 98 99 100
成長率 5% -8% 3% 5% 6% 0% 5% 108% 1% 2%
如此一來,使用算術平均數肯定會高估,
而幾何平均數會因為負數和零的關係無法計算
請問各位大大,實務遇到此種情形,年均成長率該如何計算?請賜教
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