數據轉變對平均值的影響 | How Data Change Affects Averages

影片內容:

00:20 – 每項數據加一個常數 | adding a constant to each datum
01:39 – 每項數據乘以一項常數 | multiplying each datum by a constant
02:56 – 例子 | example
05:06 – 新增一項數據 | insertion of a datum
11:07 – 刪減一項數據 | deletion of a datum

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