Variance and standard deviation of a discrete random variable
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Variance and standard deviation of a discrete random variable
We learn how to calculate the mean and standard deviation of a discrete random variable. The concept of a random variable is explained, along with methods to calculate its expected value (mean) and measure its spread (variance and standard deviation). A practical example makes the concept easier to understand.
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SOLVED: Two types of discrete random variables, the Binomial and the Poisson, and two types of continuous random variables, the Uniform and the Exponential, are discussed. Depending on the context, these types of random variables may serve as theoretical models of the uncertainty associated with the outcome of a measurement.Give an example, USING YOUR OWN WORDS (NOT TEXT COPIED FROM THE INTERNET), of how the Exponential distribution could be used to model something in real life (only one example
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