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歡迎您訪問數學考題練習:下列四個統計量中,不能反映數據波動大小的是!

數學考題練習:下列四個統計量中,不能反映數據波動大小的是

更新時間:2024-01-12 16:27:54作者:貝語網校

下列四個統計量中,不能反映數據波動大小的是

A.眾數

B.極差

C.方差

D.標準差

試題答案

A

試題解析

眾數是描述一組數據集中程度的統計量;中位數體現數據的中間值的大小,根據方差的意義:方差是反映一組數據波動大小,穩定程度的量;標準差是方差的平方根,也能反映數據的波動性;故選眾數.

解答:由于眾數是數據中出現次數最多的數,不能反映數據波動大小.

故選A.

點評:此題主要考查統計的有關知識,主要包括平均數、中位數、眾數、方差的意義.

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