this book aims to enable readers to understand and implement statistical methods fundamental to the six sigma approach to the continuous improvement of products, processes and services. it demonstrates key statistical methods in the application of the six sigma methodology and their implementation via the widely used statistical software package minitab. the second edition includes the following new material: pareto charts and on cause-and effect diagrams time-weighted control charts - moving, average, cusum and ewma multivariate control charts - an introduction acceptance sampling by attributes and variables (not provided in release 14) tests of association using the chi-square distribution logistic regression taguchi experimental designs