Chapter 10
One-Sample Hypothesis Testing
IN THIS CHAPTER
Introducing hypothesis tests
Testing hypotheses about means
Testing hypotheses about variances
Visualizing distributions
Whatever your occupation, you often have to assess whether something out of the ordinary has happened. Sometimes you start with a sample from a population about whose parameters you know a great deal. You have to decide whether that sample is like the rest of the population or whether it’s different.
Measure that sample and calculate its statistics. Finally, compare those statistics with the population parameters. Are they the same? Are they different? Does the sample represent something that's off the beaten path? Proper use of statistics helps you decide.
Sometimes you don't know the parameters of the population you're dealing with. Then what? In this chapter, I discuss statistical techniques and worksheet functions for dealing with both cases.
Hypotheses, Tests, and Errors
A hypothesis is a guess about the way the world works. It's a tentative explanation of some process, whether that process is natural ...
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