Probability

Probability is a measure of how likely an event is to occur, expressed as a number between 0 (impossible) and 1 (certain).

The probability of an event is calculated as: P(Event) = Number of favorable outcomes / Total number of possible outcomes.

A sample space is the set of all possible outcomes of a probability experiment.

A compound event is when two or more independent events occur together.

The probability of rolling a specific number on a die is 1/6, since there are 6 possible outcomes.

The theoretical probability of pulling a red marble is 3/9 or 1/3.

An event is 'equally likely' if all outcomes have the same chance of occurring.

The probability of rolling an even number (2, 4, or 6) is 3/6 or 1/2.

Independent events are events where the outcome of one event does not affect the outcome of another.

The probability of getting at least one head when flipping two coins is 3/4.