Exam 13: A: Basic Sampling Issues

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Marketing researchers might view a respondent whose family works in marketing as a security threat.

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In a ___________,data are obtained from or about every member of the population of interest,while in a ______________,information is obtained from or about a part of the population and used to make estimates about various characteristics of the total population.

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Which of the following sampling methods,if properly invoked,will produce projectable results?

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The size of the population is needed in order to compute a skip interval.

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A researcher randomly selected 10 census tracts from a metropolitan area.Within each census tract,30 households were randomly selected.The sampling technique just described would be a ______________.

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The difference between the sample result and population value is known as __________.

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The type of error which results from the fact that samples are not perfectly representative of the populations from which they are drawn is known as _______.

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In order to compute a skip interval,the researcher needs to know the desired sample size and the __________.

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Probability samples are more popular in marketing research than nonprobability samples.

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Stratified random samples are often confused with which of the following nonprobability sampling techniques?

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The first step in the development of a sampling plan is to:

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Nonprobability samples cost less than probability samples.

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A researcher invokes a pilot sample and finds that respondents from households with less than $50,000 annual income respond very differently than respondents from households with greater than $50,000 annual income,with regard to the key survey questions.In addition,the researcher's preliminary results show greater variance among respondents in the over $50,000 households.Given the preceding,which probability sampling method should the researcher invoke and why?

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________________ samples must be selected in such a way that every element of the population has a known and equal chance of being selected.

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Developing an appropriate sampling frame is often one of the easiest things that a researcher faces.

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How is the Internet population different from the general population?

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What do convenience,judgment,quota,and snowball samples have in common?

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Proportional allocation is also referred to as optimal allocation.

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Multistage area (probability)sampling is used for national surveys or surveys that cover large regional areas.

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Ideal census conditions are seldom available,even when the population is very small.

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