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8 Cards in this Set

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RANDOM SAMPLE
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
SAMPLING WITH REPLACEMENT
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
SAMPLING WITHOUT REPLACEMENT
a method of sampling in which the members of the sample are not returned to the population before subsequent members are selected
A PRIORI PROBABILITY
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
p(A)
the probability of occurrence of event A
A POSTERIORI PROBABILITY
empirical viewpoint, literally means after the fact-- after some data have been collected

p(A) = # of times A has occurred
/
total number of occurrences
PROBABILITY OF OCCURRENCE OF A *OR* B
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)
MUTUAL EXCLUSIVITY
two events that cannot occur together