CHAPTER 8Getting Good Samples and Data
What you will learn in this chapter is how to take good samples and get good data. Without these, even the best thinking won’t matter much because you won’t be able to put it to the test properly.
In later chapters, you will see how to calculate the minimum sample size and how to verify that the gauge that is being used to measure a product is giving you data that are sufficient for your needs. Just as important, however, is making sure that your sample and your data truly represent the population of the process that you wish to measure. The whole intent of sampling is to be able to analyze a process or a population and get valid results without measuring every part or every component, so sampling details ...
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