## Probability and Statistics: Terminology

This section covers the basic terminology of statistics and probability theory . It is important to learn these terms now because future readings will be using them.

### Basic Terminology in Probability and Statistics

Let's start with the two main terms: Probability and Statistics.

### What is probability theory?

*Probability theory* is a branch of mathematics concerned with *probability*. Although there are several different *probability* interpretations, *probability theory* treats the concept in a rigorous mathematical manner by expressing it through a set of axioms.

### What is statistics?

*Statistics* is a subfield of mathematics. It refers to a collection of methods for working with data and using data to answer questions. We need *statistics* to help us turn observations into information and to answer questions about samples of observations.

*Probability* deals with predicting the likelihood of future events, while *statistics* involves the analysis of the frequency of past events.

#### Instruction

Read more about probability and statistics. Try to focus more on the terminology.