## Definitions

## Formative Assessment

# Summary of the Math: Definitions

Read and discuss.

** Theoretical probability**: The ratio of favorable outcomes to the total number of possible outcomes; often simply called

*probability*. The results based on theoretical probability are called the

*expected results*.

** Experimental probability**: The ratio of favorable outcomes to the total number of trials in an experiment. The results based on experimental probability are called the

*actual results*.

** Outcome**: A single possible result

** Sample space**: The set of all possible outcomes

** Experiment**: In probability, a controlled, repeated process (such as repeatedly tossing a coin)

* Trial:* Each repetition in an experiment; for example, one coin toss

** Event**: A set of outcome(s) to which a probability is assigned

## Hint:

Can you:

- Explain how expected results are determined?
- Explain how actual results, based on experimental probability, compare to expected results, based on theoretically probability?