| Variance -方差 方差就是一組數據中平均值與任意點之間的距離。 The Variance is the distance between the mean of a set of data to any point in the data.
Variation -差異 正常預期結果與觀測結果之間的差額總量即為差異 The amount of difference between a normal expected output to the observed output is variation.
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