常見例句雙語(yǔ)例句The method that using weighted arithmetic average of class interval' class mid-value in computing the average is troublesome and is wrong.運(yùn)用組距數(shù)列組中值加權(quán)算術(shù)平均法計(jì)算平均指標(biāo)比較麻煩，也容易出錯(cuò)； 返回 class mid-value