CHAPTER 8Identifying and Verifying Causes
Purpose of these tools
To increase the chances that you can identify the true root causes of problems, which can then be targeted for improvement.
The tools in this chapter fall into two very different categories:
a) Tools for identifying potential causes (starts below) are techniques for sparking creative thinking about the causes of observed problems. The emphasis is on thinking broadly about what’s going on in your process.
b) Tools for verifying potential causes (starts on p. 149) are at the opposite end of the spectrum. Here the emphasis is on rigorous data analysis or specific statistical tests used to verify whether a cause-and-effect relationship exists and how strong it is.
Part A: Identifying ...
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