影片內容: 00:05 – concept of weighted mean 加權平均數的概念 04:59 – illustrative example 例子 所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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影片內容: 00:20 – adding a constant to each datum 每項數據加一個常數 01:39 – multiplying each datum by a constant 每項數據乘以一項常數 02:56 – illustrative example 例子 05:06 – insertion of a datum 新增一項數據 11:07 – deletion of a datum 刪減一項數據 所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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影片內容: 00:05 – definition of mode and modal class 眾數與眾數組的定義 02:14 – illustrative example 例子 所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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影片內容: 00:05 – definition of median 中位數的定義 03:23 – illustrative example 1 例子 1 05:01 – illustrative example 2 例子 2 所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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影片內容: 00:05 – concept of averages 平均值的概念 00:58 – definition of arithmetic mean 算術平均數的定義 02:01 – illustrative example 1 例子 1 02:32 – illustrative example 2 例子 2 04:04 – illustrative example 3 例子 3 05:35 – illustrative example 4 例子 4 所屬主題: [初中數學] – Measures of Central Tendency 集中趨勢的量度

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