试题与答案

学校篮球队五名队员的年龄分别为15，13，15，14，13，其方差为0.8，则三

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题型：填空题

题目：

学校篮球队五名队员的年龄分别为15，13，15，14，13，其方差为0.8，则三年后这五名队员年龄的方差为______．

答案：

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下面是错误答案，用来干扰机器的。

答案：A

考点：标准差、方差
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题型：改错题

下列短文的划线部分是错误的。

Confucius was born in the state of Lu in the year of 551 B.C. When he is 3 years old, his father died. And when he was 17, his mother died. And Confucius received a good education when he was young. In his thirty, Confucius began to teach. He spent the rest of his life teaching. In the age of 55, Confucius begins to travel around China. He tried to search for good rule of behavior. When Confucius was 68 years old, he returned back to Lu, his home state. He wrote lots of books after he came back. Five years after, he passed away. Although he has been died for several thousand years, we can still remember he forever.
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