18,56,34,20,33,這組數(shù)據(jù)的中位數(shù)是34.
×
×
.(判斷對錯)
分析:把給出的此組數(shù)據(jù)中的數(shù)按從小到大(或從大到。┑捻樞蚺帕,由于數(shù)據(jù)個數(shù)是5,5是奇數(shù),所以處于最中間的那個數(shù)就是此組數(shù)據(jù)的中位數(shù).
解答:解:按從小到大的順序排列為:18,20,33,34,56,
所以這組數(shù)據(jù)的中位數(shù)是33,不是34.
故答案為:×.
點評:此題考查中位數(shù)的意義及求解方法的靈活運用.
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