Expected Value

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(Since a die doesn't even have a face that says 3.5, this illustrates that very often, the "expected value" isn't a value you actually expect.)

The "expected value"expected value or "expectation"expectation is the (weighted) average of all the possible outcomes of an event, weightedweighed by their probability.probability. For example, when you roll a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.

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The "expected value" or "expectation" is the (weighted) average of all the possible outcomes of an event.event, weighted by their probability. For example, when rollingyou roll a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.

The Expected value"expected value" or "expectation" is the (weighted) average of the possible outcomes of an event. For example, when rolling a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.

The Expected value is the (weighted) average of the possible outcomes of an event. For example, when rolling a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.

The Expected value is the average of the possible outcomes of an event. For example, when rolling a die, the expected value is (1+2+3+4+5+6)/6 = 3.5.