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Why does the student go to see the professor? [br] What does the professor sugge
Why does the student go to see the professor? [br] What does the professor sugge
游客
2024-01-02
4
管理
问题
Why does the student go to see the professor? [br] What does the professor suggest the student do?
Listen to a conversation between a student and a professor. (P = Professor, S = Student)
P: OK, Karl. How could I help you?
S: It’s about my term paper of the urban planning class. Instead of doing library research, I was thinking of doing a survey of my own and using the data in the report.
P: That’s a nice idea. I think doing this kind of hands-on project is great experience, especially if you decided to go to graduate school.
S: But I have been having a lot of problems designing a survey.
P: Ah, it’s not as easy as it looks, is it?
S: No. Now I am not even sure if I can stick with my plan or switch back to a more traditional paper.
P: Well, you might as will get some experience sooner rather than later What’s the topic again?
S: Nothing really complex. I just wanted to survey local people about the proposal for widening route 62 from a two-lane road to four-lane highway.
P: OK.
S: So how do I go about selecting the people I want to survey? A lot of what I read has stressed having a representative sample. But I’m not sure how to do it.
P: Well, yes. A representative sample is crucial. You want the people you survey to be as close to an accurate reflection of the larger population you’re interested in as possible. Imagine that the town is a cake with raisins in it and imagine that for some reason, most of the raisins end up on one side of the cake. If you cut a piece from the other side, would that be truly representative? Would that be an accurate reflection of the cake?
S: No. You’ll be missing the raisins.
P: Exactly! So for your project, what if you only survey people who live in houses along route 62, you think that would be useful?
S: Well, no. Because everyone there would probably be opposed to the widening.
P: Yes. And that’s why a representative sample is important. You don’t want a sample that’s biased, too strongly one way or the other. So, how do you do that?
S: Well, I could make sure my survey reaches people in all parts of the town.
P: Good. So how can you do that?
S: Well, I would go and make phone calls, just choose numbers at random from the local phone director instead of passing on questionnaires, because people often don’t mail them back. But I don’t see how I could get a representative sample using the phone.
P: Well. Make sure you’re getting a nice balance of numbers. Phone company can tell you what numbers have been assigned to different parts of town. For example, for numbers in my neighborhood, that was a 256 and I live on the edge of town, where I guess you’d find a lot of pro-highway people. So make sure you don’t call mostly 256 numbers.
选项
A、Speak to as many people who live near Route 62 as possible
B、Find some samples of surveys at the library
C、Get information from the telephone company to decide whom to call
D、Pass out questionnaires that people will return by mail
答案
C
解析
题目询问教授对学生的建议。在对话的最后,学生对教授说他会打电话进行调查,接着教授说 “电话公司可以告诉你分配给城镇不同地区的电话号码”。由此可见,教授建议学生去找电话公司询问他所需要的信息,故选C项。教授举蛋糕的例子就是想告知学生不要局限在某一个地区进行调查,故排除A项“尽可能与住在62号公路附近的人交谈”。另外,学生在对话一开始就表明自己不想用图书馆的数据,故B项“在图书馆找一些调查样本”错误。在对话后半部分,学生说他会用电话进行调查,因为人们通常不会把问卷寄回来 (people often don’t mail them back),故D项“发放人们会寄回的问卷”错误。
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