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General Considerations

Below is an overview of what updates have been made from one edition to the next. Full details are logged in our GitHub repository.

All editions are included online at Leanpub (payment is 100% optional), meaning students have forever access to the book they used in their course.

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2nd to 3rd Edition Updates

The 3rd Edition was publicly released on May 2nd, 2022. The textbook price is unchanged from the 2nd Edition at $20.

Visual updates. The cover for the new edition includes an illustration that blends art and statistics.

Structural and pedagogy. The normal approximation is now introduced earlier and is placed in Chapter 2 (Summarizing Data). Chapter 3 (Probability and Probability Distributions) has been reorganized to include the Geometric and Binomial Distributions. Chapter 4 (now titled, Sampling Distributions) has been improved to better cover sampling distributions, including sampling distributions for the difference of proportions and difference of means. To better streamline topics and align with AP CED, Section 5.4 (Does it make sense?) has been folded into Section 5.3 (Introducing Hypothesis testing). Inference for the slope of a regression line can now be found in Section 8.4, now coming after the section on transformations for skewed data. Desmos quick-start links have been added for Normal, Geometric, and Binomial distributions.

Data updates. Many older data sets have been replaced with new data sets.

Exercises. Several new exercises have been added, including several problems focused on: calculating mean and standard deviation from a probability table, sampling distributions for the difference of means and difference of proportions, and choosing which chi-square test to apply. Some exercises have been updated or removed, including exercises in the inference chapters that previously did not meet the required conditions for the relevant inference procedure. At least one problem in each inference section updated to ask students to use the Identify, Choose, Check, Calculate, Conclude framework for organizing their response, with solutions also presented in that complete form.

Price. The PDF is still free. B&W paperback retail price is $20, which is the same as the 2nd Edition. We encourage high schools to purchase books via openintro.org/store to get about 40% off retail (min purchase of 10+ books). We're able to offer this much lower price since this eliminates the large selling fee associated with sales on Amazon.com. You may see an increase to the price on Amazon relative to other retailers and bookstores, e.g. the price may increase to $25-30, if we see Amazon applying fee structures that handicap our ability to later sell full-color prints at reasonable prices.

The 1st and 2nd Editions will continue to be available thru the Leanpub listing. We may discontinue the Amazon listing for these prior editions' paperbacks at some point.

We will always offer low-priced replacement paperbacks for the 1st and 2nd editions to schools through openintro.org/store. We know schools often keep high school textbooks for more than one year, so we want to ensure schools can continue to replace copies of older editions so they do not need to buy a full set of new edition books when only a few books require replacement.

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1st to 2nd Edition Updates

The 2nd Edition was released on June 1st, 2019. The textbook price was updated from $10.57 for the 1st Edition to $20 for the 2nd Edition, which we believe will be a sustainable price point that helps support OpenIntro as it scales into new subjects.

Complete visual redesign. Complete style redesign of chapter, section, example, guided practice, and term box layouts. Sections now always start at the top of a page, making them easier to find.

Structural and pedagogy. Each section now begins with motivating questions to increase student interest and engagement with content. Learning objectives are clearly laid out at the beginning of each section. The most important concepts and skills in each section are distilled and organized in the section summaries. Chapter highlights review and connect concepts across the sections in the chapter. Confidence intervals and hypothesis tests are now summarized with an easy to remember five-step process: Identify, Choose, Check, Calculate, Conclude. Worked examples follow this structure. Z-scores are now introduced immediately after the discussion of standard deviation. Calculator reference, Formula sheet, and Inference Guide have been added. Additional links to Desmos activities/calculators, Quizlet sets, and Tableau Public graphs have been added.

Data updates. Many older data sets have been replaced with new data sets. We've consolidated data sets information from the main text into a Data Appendix (Appendix B).

Exercise overhaul. Exercises are now at the end of sections, with a handful of additional review exercises at the end of each chapter. Dozens of new exercises, as well as removing many older exercises.

Price. The PDF is still free. B&W paperback retail price is $20, which is up from $10.57 for the 1st Edition. We encourage high schools to purchase books via openintro.org/store to get about 40% off retail (min purchase of 10+ books). We're able to offer this much lower price since this eliminates the large selling fee associated with sales on Amazon.com. You may see an increase to the price on Amazon relative to other retailers and bookstores, e.g. the price may increase to $25-30, if we see Amazon applying fee structures that handicap our ability to later sell full-color prints at reasonable prices.

The 1st Edition will continue to be available thru the Leanpub listing. We may discontinue the Amazon listing for the paperback at some point.

We will always offer low-priced replacement paperbacks for the 1st edition to schools through openintro.org/store. We know schools often keep high school textbooks for more than one year, so we want to ensure schools can continue to replace copies of older editions so they do not need to buy a full set of new edition books when only a few require replacement.