xiv Preface New Data Sets: This book includes a rich data set library in Appendix B so that professors and students have ready access to real and interesting data. Appendix B has been expanded from 32 data sets to 46 data sets. Twenty of those data sets are new, including Internet Traffic, Queues, Car Data, Commute Times, Candies, Taxi Data, and Disney World Wait Times. Larger Data Sets: The largest data set in the previous edition had 600 cases. The data set library in this 14th edition includes data sets with 6068, 3982, 5755, 8959, and 1000 cases. In addition, there are big data sets with 465,506 cases and 31,784 cases. Working with such larger data sets is essential to students progressing into the age of big data and data science. New Types of Exercises: To foster the development of critical thinking, the Cumulative Review Exercises near the end of Chapters 9, 10, and 11 consist of open-ended questions in which students are presented with a data set, and they are asked to pose a key question relevant to the data, identify a procedure for addressing that question, then analyzing the data to form a conclusion. New Margin Essays: This 14th edition of Elementary Statistics includes 36 new margin essays. Big (or Very Large) Data Projects: New to this edition, these projects are located near the end of each chapter and ask students to think critically while using large data sets. New Chapter Problem Icon: Examples that relate to the Chapter Problem are now highlighted with this icon CP to show how different statistical concepts and procedures can be applied to the real-world issue highlighted in the chapter. Organization Changes New Technology: The previous edition of Elementary Statistics introduced the resampling method of bootstrapping in Section 7-4. This 14th edition of Elementary Statistics includes these methods of resampling using bootstrapping and randomization: Bootstrap One Proportion Bootstrap Two Proportions Bootstrap One Mean Bootstrap Two Means Bootstrap Matched Pairs ------------------------------------------- Randomization One Proportion Randomization Two Proportions Randomization One Mean Randomization Two Means Randomization Matched Pairs Randomization Correlation New Section 4-5: Simulations for Hypothesis Tests New Resampling Methods: Resampling methods are new to Sections 8-2, 8-3, 8-4, 8-5, 9-5, and 10-1. New Section 8-5: Resampling: Using Technology for Hypothesis Testing New Section 9-5: Resampling: Using Technology for Inferences New Subsection 10-1, Part 3: Randomization Test for Correlation New Chapter 15: Holistic Statistics
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