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Another mistaken poll Prior to the mayoral election discussed in Exercise 15, the

Stats Modeling the World | 4th Edition | ISBN: 9780321854018 | Authors: David E. Bock, Paul F. Velleman, Richard D. De Veaux ISBN: 9780321854018 481

Solution for problem 16 Chapter 11

Stats Modeling the World | 4th Edition

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Stats Modeling the World | 4th Edition | ISBN: 9780321854018 | Authors: David E. Bock, Paul F. Velleman, Richard D. De Veaux

Stats Modeling the World | 4th Edition

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Problem 16

Another mistaken poll Prior to the mayoral election discussed in Exercise 15, the newspaper also conducted a poll. The paper surveyed a random sample of registered voters stratified by political party, age, sex, and area of residence. This poll predicted that Amabo would win the election with 52% of the vote. The newspaper was wrong: Amabo lost, getting only 46% of the vote. Do you think the newspapers faulty prediction is more likely to be a result of bias or sampling error? Explain.

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Histogram  Divide data o Equal width o No overlapping  Bar chart o Skew­ pulls direction of mean o Symmetric Numeric Summary Center, spread, and location  Greek letters for population  Roman letters for statistics 1. Mean  µ= population mean  x bar= sanple mean o ∑ Xi all over n= sample mean k=0 2. Mean vs. Median a. Mean used the most b. N is small when outliers occur c. Use median, mean is too affected Spread 1. Range (Max­Min) a. Sensitive to outliers 2. IQR a. Not sensitive to outliers Variability­ Xi­X bar

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Chapter 11, Problem 16 is Solved
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Textbook: Stats Modeling the World
Edition: 4
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
ISBN: 9780321854018

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Another mistaken poll Prior to the mayoral election discussed in Exercise 15, the