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Quiz VI Vocabulary
N/A
25
Mathematics
10th Grade
03/03/2009

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Term
compound event
Definition
the union or intersection of two events
Term
overlapping events
Definition
events that have one or more outcomes in common
Term
disjoint or mutually exclusive events
Definition
two events that have no outcomes in common
Term
probability of compound events: P(A or B)=
Definition
P(A)+P(B)-P(A and B)
Term
probability of compound events (disjoint): P(A or B)=
Definition
P(A)+P(B)
Term
complement of event A
Definition
consists of all outcomes that are not in A
Term
set
Definition
a collection of distinct objects
Term
probability of the complement of an event: P(Abar)=
Definition
1-P(A)
Term
element or member
Definition
each object in a set
Term
empty or null set
Definition
the set with no elements; denoted by zeorwithaslashthroughitthingy
Term
universal set
Definition
the set of all elements under consideration; denoted by U
Term
union of two sets A and B
Definition
written as AUB and is the set of all elements in either A or B
Term
intersection of two sets A and B
Definition
written as A(upside-down-U)B; is the set of all elements in both A and B
Term
complement of set A
Definition
written as Abar; the set of all elements in the universal set U that are not in A
Term
subset
Definition
A is a subset of B if every element of set A is also an element of set B
Term
probability of independent events: P(A and B)=
Definition
P(A)xP(B)
Term
dependent events
Definition
two events in which the occurence of one affects the occurence of the other
Term
conditional probability
Definition
the probability that B will occur given that A has occured; written as P(BlineA)
Term
probability of dependent events: P(A and B)=
Definition
P(A)xP(BlineA)
Term
random variable
Definition
a variable whose value is determined by the outcomes of a random event
Term
probability distribution
Definition
a function that gives the probability of each possible value of a random variable; the sum of all the probabilities in a probability distribution must equal 1
Term
binomial distribution
Definition
shows the probabilites of the outcomes of a binomial experiment
Term
symmetric distribution
Definition
if you can draw a vertical line that divides the histogram into two parts that are mirror images
Term
skewed distribution
Definition
a distribution that is not symmetric
Term
P(k successes)
Definition
nCkpk(1-p)n-k
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