Exam 9: Selecting the Sample

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While they rely heavily on social networks,referral samples are often useful in:

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When a researcher specifies percentages of the total sample for various types of individuals to be interviewed and selects them via nonprobability sampling,it is termed a quota sample.

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The simple random sampling method does not guarantee that every member of the population has an equal chance of being selected into the sample;therefore,the resulting sample,no matter what the size,will not be a valid representation of the population.

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Cluster sampling is desirable when highly similar groups can be easily identified,such as subdivisions spread across a wide geographic area.

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Which type of research method uses purposive sampling rather than probability sampling?

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A subset of the population is:

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The main disadvantage of using random number to draw a simple random sample is:

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________ are appropriate when researchers have a detailed demographic profile of the population on which to base the sample.

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It is not possible to obtain precision or accuracy with surprisingly small samples.

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There are no impracticalities associated with a census,particularly when you think about target markets encompassing millions of consumers.

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Discuss the reasons that taking a sample is almost always desirable over taking a census.

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The most well known census is the U.S.census for which the target population is:

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With nonprobability methods there is no way to determine the probability even if the population size is known because the:

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With probability sampling methods,some members of the population do not have any chance of being included in the sample.

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Probability samples are samples in which members of the population have a known chance of being selected into the sample.

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Name and describe the four basic nonprobability sampling methods that contain bias because all members of the population do not have a fair chance of being selected into the sample.

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A sample frame invariably contains sample frame error,which is the degree to which the sample frame fails to account for all of the population.

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________ is an entire group under study as specified by the objectives of the research project.

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When a researcher uses ________,sample frame error occurs in the form of members of the population who are infrequent users or nonusers of that location.

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A busy pedestrian area or a shopping mall,as the sample frame from which to intercept potential respondents,would represent what type of nonprobability sampling method?

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