Pareto Analysis

Introduction: Pareto Analysis

Pareto Analysis is a decision-making method based on the 80/20 rule, which states that roughly 80 percent of problems often come from 20 percent of causes. It helps organisations identify and focus on the most important issues that will create the greatest impact when solved.

Background

The idea originated with Vilfredo Pareto, an Italian economist, who observed that 80 percent of the wealth in society was owned by 20 percent of the population. Later, Joseph Juran, a pioneer in quality management, applied this principle to business and process improvement. He demonstrated that most quality problems or defects are usually linked to a small number of key causes.

Key Elements / Features

• 80/20 principle: A small number of causes are responsible for most of the effects.
• Visual chart: Problems are displayed in a bar chart arranged from highest to lowest frequency or impact.
• Focus: Encourages teams to concentrate on the “vital few” rather than the “trivial many.”
• Data-driven: Relies on actual measurements and evidence, not assumptions or opinions.

Applications / Examples

• In a service centre, 80 percent of customer complaints may come from two main issues, such as billing errors and long wait times.
• In manufacturing, a single machine or process may be responsible for most product defects.
  

By addressing these critical causes first, organisations can achieve significant improvements with minimal effort.

Relevance / Impact

Pareto Analysis is a key tool in continuous improvement and problem-solving. It ensures that time, effort, and resources are directed where they produce the most value. By focusing on the most influential causes, teams can drive faster and more effective results.

See also

• 7 Quality Control Tools
• 7 MP tools
• Lean
• Fishbone Diagram