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5 Whys

Case Study: Using the 5 Whys to Validate Assumptions

A simple tool, the 5 Whys, helps a business unearth an assumption embedded in its fee collection process. Once the assumption was revealed and tested with data, impressive results ensued.

Determine the Root Cause: 5 Whys

The 5 Whys is a technique used in the Analyze phase of the Six Sigma DMAIC methodology. The 5 Whys is a great Six Sigma tool that doesn't involve a statistical hypothesis and in many cases can be completed without a data collection plan.

Going Beyond the 5 Whys

A new tool – the Morris 5 So What anaysis – can aid Lean Six Sigma practitioners in understanding and communicating the value of potential solutions. The tool was orginally developed to help articulate project benefits to U.S. Army leaders.

Is 5 Times Enough to Ask “Why?”

The 5 Whys approach to root cause analysis is by no means new, nor does it originate in Six Sigma. Yet it is often used in the Analyze phase (of DMAIC [Define, Measure, Analyze, Improve, Control]), especially when significant data on…

Resource Page: The Whys and Wherefores of the 5 Whys

In the context of process improvement, the 5 Whys is an qualitative approach to root cause analysis. Analysis using the 5 Whys is typically performed by a team, requires no special statistical knowledge and makes the most of the collective knowledge of a team. And it is as simple as continuing to ask “Why?”

The 5 Whys: A Simple Tool in Value Stream Analysis

Value stream mapping is hard work because it requires looking at a process as if every step is non-value-added and is costing the organization time and resources. The 5 Whys is an easy way to root out as many non-value-added steps as possible.

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