关于标准差，下列表述正确的是A．标准差的单位与原始数据的单位

搜题请搜索小程序“爱下问搜题”

问题单项选择题

关于标准差，下列表述正确的是

A．标准差的单位与原始数据的单位不相同
B．标准差的单位与原始数据的单位相同
C．标准差没有度量衡单位
D．同一资料的标准差一定比均数大
E．标准差就是标准误

答案

参考答案：B

填空题

句型转换

改写句子按括号中的要求完成改写后的句子，每个空格填一个单词。（5分）

小题1:I like salad for breakfast.(改为否定句)

I ___________ ___________ salad for breakfast.

小题2:The post office is across from the supermarket. (就划线部分提问)

_____________ _____________the post office?

小题3:The tourist asked me, “ How do you feel about Jinan Olympic Sports Center?” (改写句子，句意不变）

The tourist asked me how ___________ ___________ about Jinan Olympic Sports Center.

小题4:The girl has become a popular singer and many of her fans want to be like her. (改写句子，句意不变）

The girl has become a popular singer and she is ___________ ___________ to many of her fans.

小题5:People gave some food to the village girl when they saw her on the street last month. (改写句子，句意不变）

Some food ___________ given to the village girl when she was___________ on the street last month.