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# Statistics

### probabilities ch 4

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

Probability Experiment | Process which leads to well-defined results call outcomes |

Outcome | The result of a single trial of a probability experiment |

Sample Space | Set of all possible outcomes of a probability experiment |

Event | One or more outcomes of a probability experiment |

Classical Probability | Uses the sample space to determine the numerical probability that an event will happen. Also called theoretical probability. |

Equally Likely Events | Events which have the same probability of occurring. |

Complement of an Event | All the events in the sample space except the given events |

Empirical Probability | Uses a frequency distribution to determine the numerical probability. An empirical probability is a relative frequency. |

Subjective Probability | Uses probability values based on an educated guess or estimate. It employs opinions and inexact information. |

Mutually Exclusive Events | Two events which cannot happen at the same time. |

Independent Events | Two events are independent if the occurrence of one does not affect the probability of the other occurring |

Dependent Events | Two events are dependent if the first event affects the outcome or occurrence of the second event in a way the probability is changed. |

Conditional Probability | The probability of an event occurring given that another event has already occurred |

Bayes' Theorem | A formula which allows one to find the probability that an event occurred as the result of a particular previous event. |

Created by:
sam6204