题目
If the range of the set of numbers {150, 90, 125, 110, 170, 155, x, 100, 140} is 95, which of the following could be x?
解析
我们逐一分析每个选项:
1) 若\(x = 80\),极差=最大值-最小值=170 - 80 = 90。但集合的极差应为95,因此该值不成立。
2) 若\(x = 85\),极差=170 - 85 = 85。该值不成立。
3) 若\(x = 95\),极差=170 - 90 = 80。该值不成立。
4) 若\(x = 125\),极差=170 - 90 = 80。该值不成立。
5) 若\(x = 185\),极差=185 - 90 = 95。这是唯一可能的取值。
选项:E