🧪 Quality Performance Quality Simulation

This simulation demonstrates how manufacturing performance metrics are used to assess and improve quality: parts roll off a virtual production line with a dimension drawn from a normal distribution around a process mean, and each one is checked against the customer's spec limits. Adjust the process mean, its variation (σ) and the spec width to watch a real-time histogram and the industry-standard capability indices — Cp, Cpk, Pp and Ppk — update along with the resulting defect rate in parts-per-million. The corrective-action button applies the standard quality-engineering fix (recentering the mean and tightening the variation) so you can track key indicators and see corrective actions actually move the numbers, exactly as a quality engineer would on a real line.