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