Which tool is most helpful for identifying 搗ital few?from 搕rivial many?

Question

Options

• AScatter plot
• BPareto chart
• CSIPOC
• DCheck sheet

• A
  4% (1)
• B
  92% (22)
• C
  4% (1)

Explanation

A Pareto chart is specifically designed around the Pareto Principle (the 80/20 rule), which states that roughly 80% of problems stem from 20% of causes - exactly the "vital few vs. trivial many" distinction. It ranks categories by frequency or impact in descending bars with a cumulative percentage line, making it visually obvious which few factors drive the majority of issues.

Why the distractors are wrong:

• A. Scatter plot - shows the relationship (correlation) between two continuous variables; it doesn't rank or prioritize causes.
• C. SIPOC - a high-level process mapping tool (Suppliers, Inputs, Process, Outputs, Customers) used to define process scope, not to prioritize problems.
• D. Check sheet - a data collection tool used to tally occurrences; it gathers the raw data but doesn't analyze or prioritize it.

Memory tip: Think "Pareto = Priority." Both start with "P," and the Pareto chart's whole purpose is to tell you what to prioritize - the vital few items on the left of the chart that account for most of the impact.

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