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chapter9 defientions
word defientions
15
Mathematics
7th Grade
04/19/2012

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Term
probability
Definition
A simple event is a ratio that compares the number of favorable outcomes to the number of possible outcomes
Term
random
Definition
outcomes occur at random
Term
complementary events
Definition
Two events that are the only ones that can possibley happen the sum is 1
Term
Fair game
Definition
A game in wich players of equal skill have an equal chance of winning
Term
Tree diagram
Definition
used to show all possible outcomes
Term
sample space
Definition
shows all possible outcomes
Term
fundemental counting principle
Definition
If event M can occur in m ways and is followed by event n that can occur in n ways then the event m followed by n can occur in m times n ways.
Term
permutation
Definition
a arrangement in wich order is important
Term
combination
Definition
An arrangement or listing of objects in wich order is not important.
Term
experimental probability
Definition
is founding using frequencies obtained in an experiment or game
Term
theoretical probability
Definition
expected probability of an event occuring
Term
compound event
Definition
consists of two or more simple events
Term
independent events
Definition
the probability of two independent events can be found by multiplying the probability of the second event
Term
unbiased sample
Definition
the whole population is represented
Term
biased sample
Definition
one or more parts of the population are favored over the others
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