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WordNet-Online
Definitions from WordNet
Noun random variable has 1 sense
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Definitions from the WebRandom VariableDescription:A random variable refers to a variable whose value is determined by the outcome of a random event, such as a sequence of experiments or a random process. In statistics and probability theory, random variables are used to model and analyze uncertain or stochastic phenomena. Senses:1. Mathematical Definition:In mathematics, a random variable is a function that assigns a numerical value to each possible outcome of a random event. It is often denoted by capital letters, such as X, Y, or Z. Example Sentence: The random variable X represents the number of heads obtained when tossing a fair coin. 2. Statistical Use:In statistics, a random variable is used to describe and analyze the probability distribution of a particular event or data set. It provides a way to quantify and measure uncertainty. Example Sentence: The mean and variance of a random variable are important measures to understand its characteristics. 3. Engineering Application:In engineering and various scientific fields, random variables are commonly utilized to model and simulate random processes or phenomena that exhibit uncertainty or randomness. Example Sentence: The simulation model uses a random variable to represent the arrival times of customers at a service center. Related Products: | ||||
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