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Daniela Marzagão

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Cp, Cpk, Pp and Ppk: Know How and When to Use Them

For many years industries have used Cp, Cpk, Pp and Ppk as statistical measures of process quality capability. Some segments in manufacturing have specified minimal requirements for these parameters, even for some of their key documents, such as advanced product quality planning and ISO/TS-16949. Six Sigma, however, suggests a different evaluation of process capability by…


Six Sigma and Innovation Need Not Be Exclusive

In a production and development environment, Six Sigma attempts to reduce rework from the start, cutting down on costs and development cycle time. Compared to the try-fail method, in which practitioners usually generate thousands of ideas before finding a really useful concept for developing a new product or service, Six Sigma’s systematic approach may be…