The strength of this book has been its unerring accuracy and statistical precision. The role of computers and statistical software has been thoroughly integrated throughout. This edition focuses on maintaining the statistical integrity of past editions while modernizing the book by integrating the use of statistical software, adding new examples and exercises (many with real data), and an emphasis on data analysis and interpretation of output. The fifth edition features both Excel and Minitab. Earlier introduction of key topics includes: introduction of statistical thinking (Ch. 1), introduction of processes and systems (Ch. 1), and coverage of bivariate data, scatter plots, regression, covariance, and correlation (Ch. 3).