Exam 10: Determining the Size of a Sample

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By applying the finite multiplier,it is possible to reduce the:

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Under normal circumstances,as the level of accuracy is increased,the sample size and the cost of a marketing research survey will be affected in what way?

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Sample accuracy refers to how close a random sample's statistic is to the population's value it represents.

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Arbitrary sample sizes are simple and easy to apply,but:

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If most respondents indicate the same answer on the response scale,the distribution has much variability because respondents are highly similar.

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Describe how a marketer decides on the level of confidence in a study.What is the typical approach in marketing research?

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Marketing researchers and their clients cannot decide on sample size without taking cost into consideration,however,the key is:

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The only perfectly accurate sample is a census.

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Focusing on budget factors especially in sample size specification:

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The ________ demonstrates how you can take any finding in the survey,replicate the survey with a random sample of the same size,and be"very likely"to find the same finding within the ±% range of the original sample's finding.

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A 90/10 split in response signifies maximum variability(dissimilarity)in the population,whereas a 50/50 split signifies little variability.

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The ________ is reflected in the spread of the distribution.

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A confidence interval is based on the normal,or bell-shaped,curve commonly found in statistics.

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The arbitrary and conventional sample size determination methods have a basic difference.Of the following,which item best describes that basic difference?

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Any p/q combination other than 50%/50% will result in a higher calculated sample size because p times q is in the numerator of the formula.

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The amount of dissimilarity in respondents' answers to a particular question is:

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The final agreed-to sample size is a trade-off between acceptable error and research cost.

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If the project director has conflicting information or is worried about the timeliness or some other aspect of the information about the population's variability,he or she may begin the full study early so he or she can estimate p more confidently.

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Sample size determines the accuracy,not the representativeness,of the sample.

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________ is an adjustment factor that is approximately equal to the square root of that proportion of the population not included in the sample.

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