為了培養(yǎng)學(xué)生的環(huán)境保護(hù)意識(shí),某校組織課外小組對(duì)該市做空氣含塵調(diào)查,下面是一天每隔2小時(shí)測(cè)得的數(shù)據(jù):0.03,0.04,0.03,0.02,0.04,0.01,0.03,0.03,0.04,0.05,0.01,0.03(單位:克/立方米)

(1)求出這組數(shù)據(jù)的眾數(shù)和中位數(shù);(2)若國(guó)家環(huán)保局對(duì)大氣飄塵的要求為平均值不超過(guò)每立方米0.025克,問(wèn)這天該城市的空氣是否符合國(guó)家環(huán)保局的要求?

答案:
解析:

  評(píng)注:1°眾數(shù)是指一組數(shù)據(jù)中出現(xiàn)次數(shù)最多的那個(gè)數(shù);中位數(shù)是指一組數(shù)據(jù)按一定順序(從小到大或從大到小)排列,處于中間的那個(gè)數(shù);平均數(shù)是指一組數(shù)據(jù)的平均值;2°平均數(shù)的算法不惟一.


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