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Definition: The associative property states that you can add or multiply regardless of how the numbers are grouped. By 'grouped' we mean 'how you use parenthesis'.In other words, if you are adding or multiplying it does not matter where you put the parenthesis. Add some parenthesis any where you like!.1  Properties.xamplesof the Associative Property for Addition. The picture below illustrates that it does not matter whether or not we add the 2 + 7 first (like the left side) or the 7 + 5 first, like the right side.
In mathematics, mean has several different definitions depending on the context. In probability and statistics, mean and expected value are used synonymously to refer to one measure of the central tendency either of a probability distribution or of the random variable characterized by that distribution.or a data set, the terms arithmetic mean, mathematical expectation, and sometimes average are used synonymously to refer to a central value of a discrete set of numbers: specifically, the sum of the values divided by the number of values.