That’s where the 5 Whys Analysis comes to the rescue. This simple yet powerful technique, pioneered by Toyota, helps you dig below the surface of a problem to uncover the root cause. Instead of patching symptoms, the 5 Whys ensures you tackle the real issue once and for all.

2024年4月23日 · The primary goal of the 5 Whys Technique is to uncover the root cause of a problem by iteratively asking “why” at least five times. This approach aims to move beyond surface-level symptoms and address the underlying issues that lead to recurring problems.

Five whys (or 5 whys) is an iterative interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. [1] . The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "why?"

2018年9月9日 · It’s just as it sounds: A discussion of the unexpected event or challenge that follows one train of thought to its logical conclusion by asking “Why?” five times to get to the root of what happened. But it’s also a lot deeper than that, too.

5 Whys Examples: Real Problems, Real Root Causes. Let’s bring the 5 Whys to life with a few actual examples across industries—and even one from everyday life. Each scenario starts with a problem, works through the whys, and ends with a root cause and fix. (Spoiler alert: It’s rarely the fault of “Steve from maintenance.”)

The five whys are used for drilling down into a problem and the five hows are used to develop the details of a solution to a problem. Both are designed to bring clarity and refinement to a problem statement or a potential solution and get to the root cause or root solution.

2025年1月23日 · The 5 Whys is a technique used in the Analyze phase of the Six Sigma DMAIC (Define, Measure, Analyze, Improve, Control) methodology. It is a great Six Sigma tool that does not involve data segmentation, hypothesis testing, regression, or other advanced statistical tools.