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Random Variables vs Probability Distribution Statistical experiments are random experiments that can be repeated indefinitely with a known set of outcomes. Both random variables and probability distributions are associated with such experiments. For each random variable, there is an associated probability distribution defined by a function called cumulative distribution function. What is a random variable? […]
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Discrete vs Continuous Distributions The distribution of a variable is a description of the frequency of occurrence of each possible outcome. A function can be defined from the set of possible outcomes to the set of real numbers in such a way that ƒ(x) = P(X = x) (the probability of X being equal to […]
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Discrete vs Continuous Probability Distributions Statistical experiments are random experiments that can be repeated indefinitely with a known set of outcomes. A variable is said to be a random variable if it is an outcome of a statistical experiment. For example, consider a random experiment of flipping a coin twice; the possible outcomes are HH, […]