Practice Quiz

Six Sigma Green Belt

Category - Black Belt

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A C chart is a control chart for the number of nonconformities per area of opportunity. An assumption made when constructing a C chart is that:
  1. size of each area of opportunity remains dynamic
  2. size of each area of opportunity remains constant
  3. sample sizes are unequal in manufacturing
  4. sample sizes are unequal in business processes
Explanation
Answer: B - An assumption made when constructing a C chart is that the size of each area of opportunity remains constant.

Key Takeaway: A C chart is constructed to track the number of nonconformities (also known as occurrences) per area of opportunity. For example, a software developer may need to track the number of errors per page of code. Unlike other control charts, the size of the area of opportunity must remain constant.
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