102 高考經建/統計學第4題 - 高考
By Frederic
at 2013-07-17T07:57
at 2013-07-17T07:57
Table of Contents
下列是5位學生的身高與體重資料:
身高(x) 172 168 164 170 176
體重(y) 62 54 58 64 62
請問那一個變數的離勢(Dispersion)較大?(15分)
A補習班解答是用 變異係數
B補習班用的是直接比較標準差
我的想法是 用變異係數當然沒問題
我想問說 如果用標準差可以嗎??
我知道身高和體重單位不一樣 用變異系數是比較好 可以消除單位
那單單比較標準差呢?? 似乎不大可行嗎?? 可是B補習班解答又那樣寫??
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ps... 本文限制umist推文噓文箭頭
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