This text investigates the application and mathematical utility of cumulative sum (CUSUM) techniques in statistical quality control. The authors, Peter L. Goldsmith and R.H. Woodward, provide a technical framework for detecting small shifts in process means that traditional control charts might overlook. By utilizing sequential analysis, the book establishes a methodology for monitoring industrial processes with increased sensitivity and precision.

Experts recognize this work as a foundational technical manual for practitioners of statistical process control. Readers frequently note the specialized nature of the content, which serves as a primary reference for understanding the historical development of sequential analysis methods.