CHAPTER 10Probability
What you will learn in this chapter of the book is to let the data drive problem solving. However, to interpret data, you need to make a judgment as to whether unusual results were due to a random cause, like someone flipping a fair coin and getting an excessive number of heads by chance, or due to an assignable cause, like the coin having two heads. A knowledge of probability helps you make this determination with a minimum number of samples.
A great deal of Six Sigma work can’t be done without some understanding of probability statistics. Probability can be used in all the steps of DMAIC. You will be able to use these techniques to solve many problems in the workplace without using additional tools.
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