# Statistics/Glossary

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This is a glossary of the book.

## P[edit]

- primary data
- Original data that have been collected specially for the purpose in mind.

- population
- Entire group being considered for data collection, that we want to draw conclusions about. EX: The population of the United States

## R[edit]

- Random variable
- A function that associates a specific and unique numerical value with each outcome of an experiment. (EX: X or Y) The outcome is denoted as lower case

## S[edit]

- sample
- a group of units taken from a larger group (the population). Used to draw conclusions of the larger group. EX: 30 people in a town in the US.
- secondary data
- Data that have been collected for another purpose and where we will use Statistical Method with the Primary Data.

- statistic
- A measure that is calculated from a sample of data.

- Statistical Independence
- They do not affect each other