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##### sample and bias math

label Algebra
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 Is the sample representative of the population? population: chocolate consumers sample: surveys inside a company's chocolate bar wrappers that are completed and returned to the company
 A. representative B. not representative
Oct 22nd, 2017

The sample is not representative of the population: Not all chocolate consumers would be inclined to spend time filling in and returning a survey, but all members of the sample did so. So there is a difference between the characteristics of the sample (all fill in surveys) and the population (don't all fill in surveys).

Mar 21st, 2015

 Which best describes bias, if any, from the sample surveyed? survey: voter preference in an upcoming election sample: randomly selected people at a large rally for one of the candidates
 A. Since the sample is randomly selected, there is unlikely to be any bias. B. Since the rally is for one of the candidates, there is likely to be bias in favor of that candidate. C. Since the rally is for one of the candidates, there is likely to be bias against that candidate. D. Since the rally is large, the sample will be large enough that bias is unlikely.

Mar 21st, 2015

Hi Fatimah,

For a different question you should make a separate post (this space is for clarifying answers, not for exanding the task beyond what it originally was).

Mar 21st, 2015

 Which best describes bias, if any, from the sample surveyed? survey: voter preference in an upcoming election sample: randomly selected people at a large rally for one of the candidates
 A. Since the sample is randomly selected, there is unlikely to be any bias. B. Since the rally is for one of the candidates, there is likely to be bias in favor of that candidate. C. Since the rally is for one of the candidates, there is likely to be bias against that candidate. D. Since the rally is large, the sample will be large enough that bias is unlikely.

Mar 21st, 2015

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Oct 22nd, 2017
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Oct 22nd, 2017
Oct 23rd, 2017
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