Capability Indices (Cp, Cpk)

Capability indices, like Cp and Cpk, are tools used to measure how well a manufacturing process performs relative to its specified limits. Cp indicates the potential capability, showing if the process can produce within the desired range when centered properly. Cpk accounts for how centered the process is in relation to the specification limits, reflecting real-world performance. Higher values mean the process is consistently producing items within the desired limits, indicating higher capability and quality. These indices help organizations assess if their processes are efficient and stable enough to meet quality standards reliably.