The Process Capability Index (Cpk) is a critical statistical measure employed to evaluate the ability of a manufacturing process to consistently produce products that adhere to predefined quality specifications and tolerance limits. By quantifying the relationship between the variability of a process and its specification limits, Cpk provides an insight into the process’s effectiveness in meeting customer requirements and quality standards. A higher Cpk value signifies a greater capability and performance of the process, indicating a robust ability to produce quality products consistently. Conversely, a lower Cpk value highlights the potential need for process adjustments or tighter controls to improve product quality and ensure compliance with quality specifications.
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