取某种橡胶件的7个样品,测量其抗拉强度,得到数据如下: 45.5,45.9,46.9’45.8,44.7,45.5,45.3 去除了一个最大值和一个最小值后,所计算出的均值为()。
A.45. 5 B.45. 6 C.45.7 D.45. 8正确答案B
取某种橡胶件的7个样品,测量其抗拉强度,得到数据如下: 45.5,45.9,46.9’45.8,44.7,45.5,45.3 去除了一个最大值和一个最小值后,所计算出的均值为()。
A.45. 5 B.45. 6 C.45.7 D.45. 8正确答案B