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In a certain automotive parts company, the quality department has a fixed routine: every September, over 900 measuring i…
1. Why the Same Data Leads to Different Conclusions in Confirmation Experiments A manufacturing company was working on i…
1. Adjusting Parameters for Three Months, but the Conclusion Fails on the Production Line A manufacturing company was wo…
In a hydraulic valve body workshop, the bore diameter is a customer specified special characteristic with a tolerance of…
1. A Meeting Held Three Times Without a Conclusion A car parts company's bracket hole size, after six months of mass pro…
1. Why Did No One Look at the Chart After Seven Days A machining workshop in an automotive parts company once implemente…
1. A One Size Fits All Approach Leads to a Year of False Alarms A certain electronic component company's SPC implementat…
1. Introduction: A "Qualified" Machine Fails After Three Months of Mass Production A manufacturing company recently purc…
An internal auditor randomly checks the metrology room, carrying out a stack of calibration certificates: each one has a…
A mechanical processing company submitted an initial process capability report to a client, focusing on the roundness of…
A precision machining company supplies drive shafts to a new energy client. During the client's audit, a process capabil…
1. An Experiment That Reached the Opposite Conclusion A die casting company conducted a two level, three factor experime…