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12 terms regarding probability

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Question
Answer
certain   An event WILL definitely happen. An outcome with a probability of 1.  
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theoretical probability   The likelihood a specific outcome will occur, determined by calculating expected outcomes under ideal circumstances.  
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experimental probability   The likelihood a specific outcome will occur, based on repeated testing and observation of results. It is the ratio of the number of times an event occurs to the number of trials.  
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probability   The chance that a particular outcome will occur measured as a ratio of the total possible outcomes. P = [favorable outcomes]/[possible outcomes].  
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unlikely   The outcome will probably NOT happen (probability between 0 and 0.5).  
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likelihood   The chance that a particular outcome will occur [impossible, unlikely, likely, certain].  
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event   A situation involving chance that has more than one possible outcome.  
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experiment   A test to determine the likelihood of a specific outcome of an event.  
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outcome   Any one of the possible results of an event.  
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likely   The outcome will probably happen (probability between 0.5 and 1.0).  
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impossible   An event WILL NOT happen; no chance of occurring (probability of 0).  
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chance   The likelihood that a particular outcome will occur.  
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