Elementary Statistics

Key differences between 12th and 11th editions

• Period between current and previous publications: 3 years (2012 vs 2009).
• The Twelfth Edition of Triola's Elementary Statistics covers material in 15 chapters as the previous edition.
• Updated real data: 84% of examples and 85% of exercises are new for 12th edition.
• New Section 2-4 "Graphs That Enlighten and Graphs That Deceive" explains how to identify bad graphs and realize how they are misleading.
• New Section 15-1 "Ethics in Statistics" discusses ethics in data collection, analysis, and reporting.
• Section 4-6 "Probabilities through Simulations" has been moved to the CD-ROM that comes with the textbook, as courses around the country scale back their emphasis on probability.
• Estimating a population mean when population standard deviation, σ is known and when is unknown is now covered in one Section 7-3.
• Material on testing a claim about a mean in now covered in one Section 8-4.