Which of the following tools is based on the 80/20 principle?

The Pareto chart is indeed based on the 80/20 principle, often referred to as the Pareto Principle. This principle suggests that roughly 80% of effects come from 20% of the causes. In the context of a Pareto chart, it visually represents the frequency or impact of different problems or causes in descending order, allowing an organization to identify the most significant factors contributing to an issue.

By using a Pareto chart, data specialists can easily visualize and prioritize the areas that require the most attention. For example, it might reveal that a small number of issues are responsible for the majority of quality problems, enabling teams to focus their efforts on addressing those key areas. This strategic allocation of resources is crucial in oncology data management, where effective intervention can lead to significant improvements in patient outcomes and operational efficiency.

Other tools listed, such as run charts, Ishikawa diagrams, and histograms, while valuable in their own rights, do not inherently apply the 80/20 principle in their design or purpose. A run chart focuses on data trends over time, an Ishikawa diagram (or fishbone diagram) identifies cause-and-effect relationships for problem solving, and a histogram represents the distribution of numerical data. None of these tools specifically