Pareto diagrams are used to:

• A. Focus attention on problems in priority order.
• B. Track daily production.
• C. Display distribution of a single variable.
• D. Compare means of groups

Answer: (A)

Pareto diagrams emphasize problems in order of importance by sorting causes from largest to smallest based on frequency or impact and displaying them as bars. This layout makes the most significant issues visually obvious, guiding you to focus improvement efforts on the vital few rather than the trivial many. The accompanying cumulative line shows how much of the total impact is reached as you add more causes, reinforcing where to concentrate resources first. This is exactly what helps prioritize actions.

It isn’t meant for tracking daily production, nor for displaying the distribution of a single variable, nor for comparing means across groups. Those require other types of charts.