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Six Sigma Green Belt

Category - Black Belt

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A special cause variation has the following qualities EXCEPT:

a variation in tools
is abnormal or unexpected
has an assignable cause
not inherent in the process

Explanation

Answer: A - Variations in tools are not special cause variations.

Key Takeaway: Variations that result from machines, tools, materials, operators, and the environment are not considered special cause ones. Special cause variations are abnormal or unexpected and have an assignable cause. They are also not inherent to the process involved.

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Six Sigma Green Belt

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