1. Expected Value NounArithmetic Mean, Expectation, First Moment  
The sum of the values of a random variable divided by the number of values.  حسابی اوسط  

See Also
Statistics  a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters.
Useful Words
Figure, Number  the property possessed by a sum or total or indefinite quantity of units or individuals; "he had a number of chores to do".
Random  lacking any definite plan or order or purpose; governed by or depending on chance; "a random choice".
Aggregate, Sum, Total, Totality  the whole amount.
Variable  a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity.