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Give examples of various external sources of secondary data and discuss how information,as a product,is distributed.
Y
Often used to represent a dependent variable in mathematical equations and models.
Random Variables
Variables whose possible values are numerical outcomes of a random phenomenon.
E(X)
The expected value of the random variable X, representing the mean or average value that X takes on.
E(Y)
The expected value of the random variable Y, representing the mean or average outcome of a set of possible values weighted by their probabilities.
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