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8 Cards in this Set
- Front
- Back
RANDOM SAMPLE
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sample selected from the population by a process that ensures that (1) each possible sample of a given size has an equal chance of being selected and (2) all the members of the population have an equal chance of being selected into the sample
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SAMPLING WITH REPLACEMENT
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a method of sampling in which each member of the population selected for the sample is returned to the population before the next member is selected
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SAMPLING WITHOUT REPLACEMENT
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a method of sampling in which the members of the sample are not returned to the population before subsequent members are selected
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A PRIORI PROBABILITY
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classical viewpoint, literally means that which can be deduced from reason alone, without experience
p(A) = # of events classifiable as A / total number of possible events |
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p(A)
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the probability of occurrence of event A
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A POSTERIORI PROBABILITY
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empirical viewpoint, literally means after the fact-- after some data have been collected
p(A) = # of times A has occurred / total number of occurrences |
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PROBABILITY OF OCCURRENCE OF A *OR* B
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equal to the probability of the occurrence of A plus the probability of occurrence of B minus the probability of occurrence of both A and B
p(A or B) = p(A) + p(B) - p(A and B) |
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MUTUAL EXCLUSIVITY
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two events that cannot occur together
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