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歡迎您訪問數學考題練習:某校男子足球隊22名隊員的年齡如下:16,17!

數學考題練習:某校男子足球隊22名隊員的年齡如下:16,17

更新時間:2024-01-12 14:02:18作者:貝語網校

某校男子足球隊22名隊員的年齡如下:16,17,17,18,14,18,16,18,17,18,19,18,17,15,18,17,16,18,17,18,17,18.這些隊員年齡的眾數與中位數分別是

A.17歲與18歲

B.18歲與17歲

C.17歲與17歲

D.18歲與18歲

試題答案

B

試題解析

眾數是一組數據中出現次數最多的數據,注意眾數可以不止一個;找中位數要把數據按從小到大的順序排列,位于最中間的一個數(或兩個數的平均數)為中位數.

解答:數據中18出現了9次,出現次數最多,所以眾數是18;

數據從小到大的順序排列為14,15,16,16,16,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,18,19,

∴組數據的中位數是(17+17)÷2=17.

故選B.

點評:本題考查統計知識中的中位數和眾數的概念.將一組數據從小到大依次排列,把中間數據(或中間兩數據的平均數)叫做中位數.一組數據中出現次數最多的數據叫做眾數.

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