Six sigma ct tree template

How-to The CT tree is a team tool. Include customers on the team whenever possible. Determine the primary drivers of customer satisfaction.

For example: If you are evaluating critical-to-quality measures, list only the key drivers for quality. If you are evaluating critical-to-cost measures, list only the key drivers for cost. Link the key drivers of customer satisfaction to the process. Record the drivers and links to the process. Note Quickly brainstorm ideas in the brainstorming list and click-and-drag them to the diagram to create associations between related ideas.

By using this site you agree to the use of cookies for analytics and personalized content. As noted, a Y -to- x flowdown tree focuses on the results measures and drivers connected with critical requirements.

A related-but-different perspective is gained by identifying and organizing the important functionality in an emerging or existing product or process. Functional analysis as an engineering method dates way back, with verbs always used to precisely describe functions.

If a team slips into labels that describe measures or where or how the functionality happens, the leader should pull the team back to the simple verb discipline. It is a method of developing insight into themes and relationships amoung issues. It helps "drill" from high level issues at one level of context usually abstract or vague to a more detailed set of common, reuseable statements.

KJ is particularly useful in creating a flowdown of information leading to solid requirements at an appropriate level of context. Unique among the other tree tools considered here because they are built from the bottom up, a KJ applies the rules of abstraction discover and articulate key messages at the top of the tree in Figure 8. These few concepts or themes distill the meaning that may not be immediately evident when looking at the many lower level facts at the bottom of Figure 8.

Teams building a KJ tree may slip into cause-and-effect thinking, considering why things happen, instead of distilling how, when and where, as is required with a KJ tree. Every lower level in a KJ tree should be a good example of the data above, at the next lower level of abstraction.

Figure 9 illustrates the concept — a ladder of abstraction which is not tied to cause and effect. The data and construction logic is what makes these four types of tree diagrams unique. This information should be valuable to project teams who have to build one of these familiar tools from time to time, as well as process owners and champions who need to fully understand the factors explained by each type of tree diagram.

Thanks for the excellent article. I have found that when using visual aids, like diagrams, they provide speed for focus and prevent stalling from the analysis to the improvement phase. You must be logged in to post a comment. By David L. Data are factual information used as a basis for reasoning, discussion or calculation; often this term refers to quantitative information.

Y is the dependent output variable of a process. Xs are the independent inputs to a process that cause or control a problem to occur in the output Y of a process.

Figure 1: Common Pitfall — Out-of-scope Answer. Figure 2: Better — Detailed and In-scope Answer. In this article we will review a CTQ tree example and explain how it can improve your business. It highlights the customer requirements and it is the origin of a CTQ tree.

These are the calculable performance specifications that have to be met by drivers to satisfy clients. In order to make an effective and efficient CTQ tree, it is necessary to identify all the above components perfectly.

There are some important and necessary steps that are required for making an effective Critical to Quality tree.

These are:. Voice of customer VOC can be identified by many ways like surveys, complaints, interviews etc. The data collected in form of Voice of Customer is in rough and basic form and it needs to be processed efficiently to transform it into customer demands.

It can be achieved by gathering a team of experts to analyze VOCs and recognize customer demand specifications and parameters. After the customer requirements are identified and analyzed it is really important for the expert team to prioritize these needs and specifications on basis of their criticality.

This step is not given much importance in some of the organizations but it should be considered as a significant feature. KANO model is considered helpful in this regard. This is the final and most important step in development of Critical to Quality tree.