staistics/ math

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A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00 a.m., his survey was done. Don't discuss what is not said. Discuss what is wrong with what is said.


really need help with this one!

  • staistics/ math -

    I'm not sure what your instructor is looking for in this problem.

    However, I see several things wrong with this scenario. First, it's unethical or maybe just poor practice to make cold calls before 9 a.m. Second, it's hard to believe that he reached all 50 voters in a two or three-hour period. The majority of voters are at work at this time of the morning.

    Is there something else we should be discussing?

  • staistics/ math -

    no, not the ethics, but from statistics stand point, what is wrong with reporting this as a legitimate survey? i don't understand the question either.

  • staistics/ math -

    Is 50 a large enough sample?

    Are people listed in a phone book really a fair sample of registered voters?

    Are phone calls likely to produce reliable results?

  • staistics/ math -

    Maybe it has something to do with the time he called? If he is calling all people without jobs, then it is not a representative sample.

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