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# Math Lesson 10

### Probability

Term | Definition |
---|---|

Probability | A number from 0 to 1 (or 0% to 100%) that describes how likely an event is to occur. |

Experiment | In probability, any activity based on a chance, such as tossing a coin. |

Outcome | A possible result of a probability experiment. |

Equally like outcomes | Outcomes that have seen the same probability. |

Certain (probability) | Sure to happen; having a probability of 1. |

Impossible Probability | Can Never Happen; having a probability of 0. |

Experimental Probability | The ratio of the number of times an event occurs to the total number of trials, or times that the activity is performed. |

Trial | A single repletion or observation of an experiment |

Fundamental counting principal | if one event has m possible outcomes and a second event has n possible outcomes after the first event has occurred, then there are m x n total possible outcomes for the two events. |

Sample Space | all possible outcomes of an experiment |

Favorable outcome | An outcome you are looking for when conducting an experiment. |

Theoretical probability | The ratio of the number of equally likely outcomes in an event to the total number of possible outcomes |

Fair | When all outcomes of an experiment are equally likely, the experiment is said to be fair. |

Independent Event | Events for which the outcome of one event does not affect the probability of the other |

Dependent Event | Events for which the outcome of the first event affects the outcome of the second event. |

Created by:
Hoogie14