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# Crit Th. Ch 11-12

### Critical Thinking Chapters 11-12 Vocab

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

classical theory of probability | the computations are made independently of any sensory observation of actual events |

principle of indifference | it is assumed that there are no "freak of nature" events that will occur |

relative frequency theory of probability | rests upon computations but depends on actual observations of the frequency with which certain events happen |

subjectivist theory of probability | interprets the meaning of probability in terms of the beliefs of individual people. |

probability calculus | functions to the set of truth-functional rules in propositional logic |

restricted conjunction rule | used to compute the probability of two events occurring together when the events are independent of each other |

general conjunction rule | used to compute the probability of two events occuring together whether or not the events are independent |

restricted disjunction rule | used to compute the probability of either of two events occuring when the events are mutually exclusive |

general disjunction rule | used to compute the probability of either two events whether or not they are mutually exclusive |

negation rule | useful for computing the probability of an event when the probability of an event not happening is either known or easily computed |

bayes theorum | a rule used for evaluating the conditional probability of two more more mutually exclusive and jointly exhaustive events |