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# C2_Chapter 9

### Chapter 9 Vocabulary

Question | Answer |
---|---|

Combination | An arrangement, or listing, of objects in which order is not important. |

Complementary Event | The events of one outcome happening and that outcome not happening are complementary events. The sum of the probabilities of complementary events is 1. |

Compound Event | An event consisting of two or more simple events |

Dependent Events | Two or more events in which the outcome of one event affects the outcome of the other event(s). |

Disjoint Events | Events that cannot happen at the same time. |

Experimental Probability | An estimated probability based on the relative frequency of positive outcomes occurring during an experiment. |

Fundamental Counting Principle | Uses multiplication of the number of ways each event in an experiment can occur to find the number of possible outcomes in a sample space. |

Independent Events | Two or more events in which the outcome of one event does not affect the outcome of the other event(s). |

Outcome | One possible result of a probability event. For example, 4 is an outcome when a number cube is rolled. |

Permutation | An arrangement, or listing, of objects in which order is important. |

Probability | The chance that some event will happen. It is the ratio of the number of ways a certain event can occur to the number of possible outcomes. |

Random | Outcomes occur at random if each outcome is equally likely to occur. |

Sample Space | The set of all possible outcomes of a probability experiment. |

Simple Event | One outcome or a collection of outcomes. |

Theoretical Probability | The ratio of the number of ways an event can occur to the number of possible outcomes. |

Tree Diagram | A diagram used to show the total number of possible outcomes in a probability experiment. |

Created by:
Mrs_Irish