Chap 13 quiz b

# Chap 13 quiz b - Which of the following statements is true...

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Which of the following statements is true about the sample size and sample representativeness? Sample size and sample representativeness are not related to each other. _____ refers to how close a random sample's statistic (for example, mean of the responses to a particular question) is to the population's value (that is, the true mean of the population) it represents. Sample accuracy Beginning with what sample size, do you find that very little gain in accuracy occurs? 1000 In the formula for sample error, p*q signifies ________. variability _____ gives the range of findings if the survey were replicated many, many times with the identical sample size. The confidence interval _____ holds that if we repeated a "yes or no" survey question a great many times-perhaps 1000- with a fresh random sample of the same size, and we made a bar chart of all 1000 percents of "yes" results, the bar chart would look like a normal curve. The central limit theorem

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## This note was uploaded on 04/14/2009 for the course MKT 232 taught by Professor Staff during the Spring '08 term at Illinois State.

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Chap 13 quiz b - Which of the following statements is true...

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