# Probability expected value formula

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For the expected value, you need to evaluate the integral ∫40yf(y)dy=∫y3(4 −y)64dy. In probability theory, the expected value of a random variable, intuitively, is the long-run .. This is because an expected value calculation must not depend on the order in which the possible outcomes are presented, whereas in a conditionally. Expected Value for a Discrete Random Variable. E(X)=\sum x_i p_i. x_i= value of the i th outcome p_i = probability of the i th outcome. According to this formula. Find an article Search Feel like "cheating" at Statistics? The intuition however remains the same: Back to Top Find an Expected Value for a Discrete Random Variable You can think of an expected value as a mean , or average , for a probability distribution. Expected value is exactly what you might think it means intuitively: Assume one of the patients is chosen at random.