Hey everyone, welcome to this lecture. What is five by analysis? Five by analysis is an iterative probing technique to get to the root causes of an effect or a problem. The answer to the first why uncovers another reason and generates another way, it often takes five eyes to arrive at the root causes of the problem. True problem solving requires identifying root causes, rather than the source. The root cause lies hidden beyond the source.

For example, you may find that the source of a problem is a supplier of a particular tool. The problem occurs there, but what is the root cause of the problem? The answer lies in digging deeper by asking why the problem occurred. Now, let's answer the next question. Why to use fiber analysis. A fiber analysis technique helps identify Five trivial many root causes.

It's a simple probing technique. It helps team collectively reach root causes. It data mines the relationship between the different root causes of a problem. It is one of the simplest tools easy to complete with no statistical analysis required. Now let's answer the next question. When to use a five by analysis.

A five by analysis technique determines the cause and effect relationship of a problem. You can use it when you want to get to the root causes of an effect or a problem without using statistical analysis, and when you want to fully uncover the root causes. That brings us to the end of this lecture. In the next lecture, you will go through some interesting examples of using a five by analysis. See you there.