**Glossary for my second book (created 2010-08-11, updated 2013-08-02)**.

This page is moving to a new website.

As I mentioned in an earlier webpage, I am talking to some publishers about writing a second book. Here's a tentative glossary for that book. I'm only including the terms in the glossary for now, but will eventually add definitions.

- Alpha level. Every statistical test has the possibility of making a Type I error or a Type II error. Alpha is the probability that your statistical test will make a Type I error. Typically, you select a test that has a small probability of a Type I error (e.g., alpha=5%). Sometimes, you are willing to tolerate a larger Type I error, if Type II errors are more serious, and will set alpha to 10% or even higher. Sometimes, Type I errors are very serious and you will require a much smaller probability for the Type I error (e.g., alpha=1%).
- Alternative hypothesis
- Beta level
- Block randomization
- Boxplot.
- Confidence interval
- Convenience sample
- Null hypothesis
- Percentile
- Power
- P-value
- Random sample
- Sampling frame
- Type I error
- Type II error