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Tools · Normal Distribution

Normal Distribution Explorer

Within limits —%

Outside limits —%

Defect rate —ppm

z at LCL —

z at UCL —

Solve for Mean (μ) solving Std deviation (σ) solving Lower limit (LCL) solving Upper limit (UCL) solving % within limits solving %

Will Vass

Most points hold the line. I look for the ones that don't.

© 2026 Will Vass