*Statistics* - the science of

- collecting, organizing, summarizing, analyzing data
- drawing conclusions from it

Goal: use imperfect information to infer facts, make predictions, and make decisions.

*A statistic* a number or value measured in context

Data Analysis: Process of statistical investigation:

- pose a question
- collect relevant data
- analyze
- form a conclusion (how?)

Questions 2-4 - answered by Statistics

There are two types of statistics:

- Descriptive Statistics - summarizing data with numbers or plots
- Inferential Statistics - making conclusions or decisions based on data

Free online books and online resources on statistics

- OpenIntro Statistics (book)
- http://en.wikibooks.org/wiki/Statistics
- http://onlinestatbook.com/2/index.html
- http://en.wikiversity.org/wiki/Topic:Statistics