Exam 10: Determining the Size of a Sample

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Information provided to clients cannot accurately represent likely outcomes and results compared to alternative available methodologies.

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False

Consider that we have nominal data (responses are categorical)and the responses are "Yes" or "No" to the question: "The next time you order pizza,will you use Domino's?" Which of the following sets of responses shows the MOST variability?

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E

Nonsampling error pertains to all sources of error other than the sample selection method and sample size.

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The most significant factor in calculating sample size (n)is the size of the population (N).For example,if you calculated that you needed a sample size of 300 in order to have an accurate sample for your hometown,it would take at least 10 times this amount,or about 3,000,in order to have an accurate sample representing the entire United States.

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In sample size formulas,the symbol "e" stands for:

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In a "Yes/No" question,50 percent "Yes" and 50 percent "No" shows less variability than does 90 percent "Yes" and 10 percent "No."

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If we are using the formula for calculating the sample size for estimating a percentage,the formula will contain:

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Instead of determining representativeness,the size of the sample affects the sample accuracy of the results.

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Which of the following statements best illustrates the concept of the "level of confidence" or z value chosen in sample size formulae?

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A finite multiplier is an adjustment factor that should be used when the sample size is small,relative to the population size.

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You are going to use a purposive sample (a nonprobability sample)to collect data from fast-food restaurant customers.Which of the following concepts would be applicable to determining sample size?

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If you were conducting a telephone survey of households using random digit dialing numbers and you determined that you needed a sample size of 1,100,which of the following would be most accurate?

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Level of confidence in sample size formulae is normally set at:

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By applying the finite multiplier it is possible to:

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Variability is defined as the amount of dissimilarity or similarity in respondents' answers to a particular question.

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If we assume the "highest" amount of variability when estimating pq,then pq are:

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A finite multiplier is used when the population,relative to the sample size,is:

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The only perfectly accurate sample is a census.

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Using the confidence interval formula for calculating sample size,the level of confidence desired to the estimate of the population values must be determined and is represented in the formula by the z value.

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When all other factors are held constant,as we increase the level of accuracy,the sample size and the cost of a marketing research survey are best characterized by which of the following?

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