Designed to aid candidates in preparing for ASQ Certified Quality Technician (CQT) certfication exam, this fourth edition aligns with the 2024 ASQ CQT Body of Knowledge (BoK). It also serves as an ideal reference for quality professionals responsible for implementing quality concepts and tools on the job. The editors have included statistical techniques, calibration and metrology procedures, inspection and testing techniques, and corrective and preventive action, as well as examples with algebra-based math throughout the book to show practical application of the material.