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6 Cards in this Set

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  • Back
a PROBABILITY DENSITY FUNCTION is...
an equation used to compute probabilties of continuous random variables that must satisfy two other properties .....
the FIRST property of the probability density function is...
the area under a graph of the equation over all possible values of the random variable must equal one
the SECOND property of the probability density function is...
the graph of the equation must be greater than or equal to zero for all possible values of the random variable
a NORMAL CURVE is...
relative frequency histograms that are symmetric and bell-shaped
when is a continous random variable NORMALLY DISTRIBUTED?
if its relative frequency histogram of the random variable has the shape of a normal curve (bell-shaped & symmetric)
in the area under the normal curve, X represents either..... or....
...the proportion or... the probability that it will have charactersitics descibed by the range