Definitions for random variable
Random House Webster's College Dictionary
a statistical quantity that can take any of the values of a specified set in accordance with an associated probability distribution.
Ref: Also called variate.
Origin of random variable:
random variable, variate, variant, stochastic variable, chance variable(noun)
a variable quantity that is random
A quantity whose value is random and to which a probability distribution is assigned, such as the possible outcome of a roll of a dice.
A measurable function from a sample space to the measurable space of possible values of the variable.
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