Welcome to the first edition of A Portable Introduction to Data Analysis.

Unfortunately, this first edition is no longer available.

The links below provide supplementary materials for the textbook.

Additional Sections

Two supplementary sections were released during the life of the first edition:

• 6.3 Other Methods for Comparing Proportions
  A discussion of odds ratios and logistic regression
• E Further Reading
  A guide to useful readings and exercises from other textbooks

Errata

There is a page of errata for the first edition.