Which of the following is NOT a purpose of an inspection plan?

An inspection plan is primarily developed to establish procedures for examining products or processes to ensure they meet specific quality standards. The key purposes of an inspection plan include identifying measurements that need to be taken during the inspection process, ensuring repeatability in measurements and processes to maintain consistency over time, and coordinating various procedures necessary to carry out inspections effectively.

Focusing on the role of an inspection plan, improving productivity is not a direct purpose. While effective inspection plans can lead to improved productivity by catching errors early and reducing rework, the primary intent is not to boost productivity directly but rather to ensure quality and compliance with standards. The other options relate closely to the heart of what an inspection plan is intended to achieve, emphasizing measurements, repeatability, and coordination of procedures in the inspection process.