小明記錄九年級第一次月考7個班的優(yōu)秀人數(shù)分別如下:33,32,32,31,32,28,26.這組數(shù)據(jù)的眾數(shù)是 .
【答案】分析:根據(jù)眾數(shù)的定義,將33,32,32,31,32,28,26按從小到大依次排列,找到中間位置的數(shù)即可.
解答:解:將33,32,32,31,32,28,26按從小到大依次排列得:26,28,31,32,32,32,33.
中間位置的數(shù)---中位數(shù)為32.
故答案為:32.
點評:本題為統(tǒng)計題,考查中位數(shù)的意義,中位數(shù)是將一組數(shù)據(jù)從小到大(或從大到。┲匦屡帕泻,最中間的那個數(shù)(最中間兩個數(shù)的平均數(shù)),叫做這組數(shù)據(jù)的中位數(shù),如果中位數(shù)的概念掌握得不好,不把數(shù)據(jù)按要求重新排列,就會出錯.