A.幾何平均數(shù) B.算術(shù)平均數(shù) C.中位數(shù) D.眾數(shù)
A.155 B.175 C.165 D.166
A.算術(shù)平均數(shù) B.中位數(shù) C.眾數(shù) D.極差