Explain the purpose of a QC process chart. Draw a QC chart to illustrate your explanation. Answer: The purpose of a QC process chart is to monitor implementation of revised best practice method.

Question

Exhibit

Options

• ABottom line results
• BMarket share growth
• CDefect reductions
• DCustomer focus

• A
  94% (30)
• B
  3% (1)
• D
  3% (1)

Explanation

Option A is correct because a QC process chart is designed to track bottom line results - the measurable performance outputs of a process over time - to determine whether implementing a revised best practice method is actually producing improvement. These results are plotted against control limits (upper and lower), giving a visual baseline to judge if the change is effective.

Option B (Market share growth) is wrong because market share is an external competitive metric, not an internal process quality measure - QC charts live inside the operation, not in the marketplace. Option C (Defect reductions) is tempting but wrong; while defects may appear on a QC chart, defect reduction is an outcome, not the purpose of the chart itself - the chart monitors overall process results, of which defects are just one possible data point. Option D (Customer focus) is wrong because it describes a business philosophy or strategy, not a quantifiable metric that can be charted.

Memory tip: Think of a QC chart as a scoreboard for your process - just like a game's final score is the "bottom line," the QC chart shows whether your process changes are moving the numbers in the right direction.

No community discussion yet for this question.