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【多选题】
下面关于中位数的描述,正确的有()。A.
中位数是分配数列中频数最大的那个变量值
B.
中位数可以将分配数列分为单位数相等的两个部分
C.
在分配数列中，若将频数改为频率，中位数并不会发生变化
D.
中位数是处在中间位置的那个变量值
E.
中位数不受极端值的影响
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举一反三
【单选题】All of them ____ at the bad news.
A.
surprised
B.
was surprised
C.
were surprising
D.
were surprised
【简答题】A．They were all above thirty years old. B．All the workmates were tough to her. C．The oldest workmate was kind to her. D．She got along quite well with all the workmates.
【单选题】The buses, _____ were already full, were surrounded by anxious people.
A.
all of them
B.
all of which
C.
they all
D.
all which
【简答题】地面天气传真图上,[SW]是( )警报
【简答题】简述Linux操作系统的特性。
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