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© 2013 Pearson Education, Inc. Active Learning Lecture Slides For use with Classroom Response Systems Introductory Statistics: Exploring the World through Data, 1e by Gould and Ryan Chapter 7: Survey Sampling and Inference Slide 7 - 1

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True or False A sample is a collection of people or objects taken from the population of interest. A. True B. False Slide 7 - 2 © 2013 Pearson Education, Inc. Response Counter

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A numerical value that characterizes some aspect of a population is called a A. statistic. B. census. C. parameter. D. sample. Slide 7 - 3 © 2013 Pearson Education, Inc. Response Counter

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A numerical characteristic of a sample of data is called a A. statistic. B. sample. C. population. D. parameter. Slide 7 - 4 © 2013 Pearson Education, Inc. Response Counter

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True or False We use parameters to estimate statistics. A. True B. False Slide 7 - 5 © 2013 Pearson Education, Inc. Response Counter

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True or False An important difference between statistics and parameters is that parameters are knowable. A. True B. False Slide 7 - 6 © 2013 Pearson Education, Inc. Response Counter

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True or False Statisticians have developed notation for keeping track of parameters and statistics. In general, Greek characters are used to represent population parameters. Statistics (estimates based on a sample) are represented by English letters. A. True B. False Slide 7 - 7 © 2013 Pearson Education, Inc. Response Counter

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In which way(s) can bias (a tendency to produce an untrue value) enter a survey A. from taking a sample that is not representative of he population B. from asking questions that do not produce a true answer C. from statistics that are naturally biased D. All of the above Slide 7 - 8 © 2013 Pearson Education, Inc. Response Counter

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True or False No matter how many different samples we take, the value of p (the population proportion) changes from sample to sample, but the value of is always the same. A. True B. False Slide 7 - 9 © 2013 Pearson Education, Inc. Response Counter

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The probability distribution of has a special name: A. population distribution B. sampling distribution C. probability density function D. standard normal distribution Slide 7 - 10 © 2013 Pearson Education, Inc. Response Counter

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True or False Bias is measured using the center of the sampling distribution: It is the distance between the center and the population value. A. True B. False Slide 7 - 11 © 2013 Pearson Education, Inc. Response Counter

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