Test Bank for Essentials of Statistics for
Business and Economics ch 57th edition
by Mario F. Triola
Random Variable - ANSA numerical description of the outcome of an experiment.
Discrete random variable - ANSA random variable that may assume either a finite number of
values or an infinite sequence of values
Continuous Random variable - ANSA random variable that may assume any numerical value in
an interval or collection of intervals
Probability distribution - ANSa description of how the probabilities are distributed over the
values of the random variable
Probability function - ANSa function, denoted by f(x) that provides the probability that x assumes
a particular value for a discrete random variable
Discrete uniform probability distribution - ANSa probability distribution for which each possible
value of the random variable has the same probability
Expected Value - ANSa measure of the central location of a random variable
Variance - ANSa measure of the variability or dispersion of a random variable
standard deviation - ANSthe positive square root of the variance
binomial experiment - ANSan experiment having special properties
binomial probability distribution - ANSa probability distribution showing the probability of x
successes in n trials of a binomial experiment.
Hypergeometric probability distribution - ANSa probability distribution showing the probability of
x successes in n trials from a population with r successes and N-r trials.
Hypergeometric probability function - ANSthe function used to compute hypergeometric
probabilities
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