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MATH 103 - Chapter 27
Vocabulary
17
Mathematics
Undergraduate 1
12/11/2010

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Term
chance
Definition
often used as an alternative word to "probability"
Term
probabilistic situation
Definition
a situation in which we are interested in the fraction of the number of repetitions of a particular process that produces a particular result when repeated under identical circumstances a large number of times
Term
experiment
Definition
a process undertaken a large number of times, together with the results
Term
outcome
Definition
a result of an experiment
Term
event
Definition
an outcome or a set of outcomes of a designated type

a specific type of outcome
Term
probability of an event
Definition
the fraction of the times the event will occur when some process is repeated a large number of times
Term
theoretical probability
Definition
a probability that can be arrived at by knowledge based on a theory of what is like to occur in a situation

what "should" happen
Term
experimental (empirical) probability
Definition
the fraction of times the particular event occurs after undertaking a process a large numbers of times

what "did" happen
Term
sample space
Definition
the set of all possible outcomes of an experiment
Term
relative frequency
Definition
another name for the probability of an event

synonymous with experimental probability
Term
probability of an event (if all events are equally likely)
Definition
P(A) = (number of times A happens) / (total number of outcomes in the sample space)
Term
Venn diagram
Definition
a visual representation of the probabilities of a sample space
Term
equally likely
Definition
when the probabilities of all events are equal
Term
randomly selected number
Definition
a number or object from a set of numbers or objects that has a chance of being selected that is equal to that of any other number or object in the set
Term
table of randomly selected digits (TRSD)
Definition
a table that can be used when doing simulations in order to approximate randomness
Term
drawing with replacement
Definition
the probabilities are preserved since the state of the experiment is returned to the original state
Term
drawing without replacement
Definition
when the probability of an event changes with respect to what has happened before
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