# Expected value computation

The Expected Value of a bet shows us how much we can expect to win (on average) per bet, and as such is the most valuable calculation a bettor can make. Definition of expected value & calculating by hand and in Excel. Includes video. Find an expected value for a discrete random variable. How to Calculate an Expected Value. Expected value (EV) is a concept employed in statistics to help decide how beneficial or harmful an action might be.
Resources Glossary Introduction to Minitab Express Review Sessions Central! The assigned value of each outcome will be positive if you expect to earn money and negative if you expect to lose. The probability distribution is then. Text is available under the Creative Commons Attribution-ShareAlike License ; additional terms may apply. These calculations will look like this: You can only use the expected value discrete random variable formula if your function converges absolutely. The expected value is also known as the expectation , mathematical expectation , EV , average , mean value , mean , or first moment. This relationship can be used to translate properties of expected values into properties of probabilities, e. You may need to use a sample space. The expected value of a random variable is denoted by and it is often called the expectation of or the mean of. This article is about the term used in probability theory and statistics. The law of the unconscious statistician applies also to a measurable function g of several random variables X 1 , Add the numbers together, and divide the sum by the number of numbers. Question from Patrick, a student: For each possible roll of the die, assign the value to be the amount of money that you will either earn or lose. Set this number aside for a moment. Sports Betting Soccer Betting Basketball Betting Football Betting Tennis Betting Hockey Betting eSports Betting.

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CRYSTAL GAME | I see how they put the tables together thats not hard its just trying to figure out where the information goes. Expected value computation rake download variable X can take value x 1 with probability p 1value x 2 with probability p 2and so on, up to value x k with probability p k. Add together the six probability-value calculations to find the EV for the overall game. Note on the formula: The expected value is also known as the expectationmathematical expectationEVaveragemean valuemeanor first moment. However, that luck is not going to continue if you keep playing. You play a gambling game with a friend in which you roll a die. |

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