expected value
Noun
Meaning
the sum of the values of a random variable divided by the number of values
Source: WordNetSynonyms
Hypernyms
Examples
An illustration of the convergence of sequence averages of rolls of a die to the expected value of 3.5 as the number of rolls (trials) grows.
By contrast, the variance is a measure of dispersion of the possible values of the random variable around the expected value.
Expectation values Another application of the law of averages is a belief that a sample's behaviour must line up with the expected value based on population statistics.
Efficiency factor is a ratio of some measure of performance to an expected value.
Floor and ceiling functions may produce answers which are off by one from the intuitively expected value.
For example, one might want to choose the portfolio return having the lowest variance for a given expected value.