For K-12 Students · Process Capability
Process Capability for a yield-rate check
Built for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework. Simulate a yield-rate check live below — adjust the inputs and watch it respond, right in your browser.
Process Capability (Cp / Cpk)Live
how good is the process?
Controls
Presets
Cp compares the spec width to the process spread — can the process fit inside the tolerances at all? Cpk also accounts for how well-centered it is. A Cpk of 1.33 is the usual bar for capable; 2.0 is Six Sigma quality with just 3.4 defects per million. Widen the spread or push the mean off-center and defects climb fast.
Data Inspector
Cp1.00
Cpk1.00
Defects2700 ppm
Ratingmarginal
Sigma level4.5σ
Capability indices
Reading this result: Centered and capable at Cpk 1.00, comfortably above the 1.33 industry bar.
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Frequently asked questions
- Is this good for k-12 students?
- Yes — this version of "Process Capability for a yield-rate check" is framed for k-12 students learning it in middle or high school. Watch the idea come alive with plain-language steps and everyday examples — perfect for projects and homework.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.