Exam 9: Selecting the Sample

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Which sampling method is used as a means of ensuring that convenience samples will have the desired proportion of different respondent classes?

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Systematic sampling is more efficient than simple random sampling because only one or a very few random numbers need to be drawn at the beginning.

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Despite some advantages,systematic sampling does not have the potential to create a sample in quality to samples created from simple random sampling.

(True/False)
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When researcher uses his or her judgment or that of some other knowledgeable person to identify who will be in the sample,he or she is using what type of nonprobability sampling method?

(Multiple Choice)
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Sampling for Internet surveys poses special opportunities and challenges,but most of these issues can be addressed in the context of our probability and nonprobability sampling concepts.Describe the three main types of sampling used in Internet surveying.

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Cluster sampling is desirable when:

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The type of sampling method in which a sample frame is divided into groups,which are highly similar to the others is:

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The sampling method in which subjectivity and convenience are factors is:

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Using a sample versus taking a census is almost always preferred.Which of the following is NOT an advantage of using a sample versus a census?

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The sample and sample unit exist within the area called the sample frame.

(True/False)
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A skewed population has a long tail on one side and a short tail on the opposite end,and deviates greatly from the bell-shaped distribution that is assumed to be the case in the use of simple random,systematic,or cluster sampling.

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Chain referral samples are not appropriate when there is a limited or disappointingly short sample frame and when respondents can provide the names of others who would qualify for the survey.

(True/False)
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In quota sampling,members of the population who are less well known or disliked or whose opinions conflict with the selected respondents have a low probability of being selected.

(True/False)
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Systematic sampling is probability sampling because it employs a non-random starting point,which ensures there is sufficient randomness in the systematic sample to approximate an equal probability of any member of the population being selected into the sample.

(True/False)
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Panel companies are especially adept at ________ because they have huge databases of information regarding demographics,possessions,lifestyle,medical ailments,and so on that can be used to select panel members to be survey respondents.

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The difficulties encountered by U.S.census takers are identical to those encountered in marketing research.

(True/False)
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Whenever a sample is taken,the survey will reflect:

(Multiple Choice)
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There are six steps and actions to defining a sample plan: 1.define the relevant population,2.obtain a sample frame,3.decide on the sample method,4.decide on the sample size,5.draw the sample,and 6.validate the sample.Thoroughly define and describe what is contained in each step.Which steps are the most critical and why?

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A research company performing a mall intercept study would be an example of the use of what type of sampling method?

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The essence of a"known"probability rests in the ________ rather than in knowing the exact size of the population.

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