What is Mean and What are its Advantages and Disadvantages How to Find the Mean If x1, x2, x3,.....,xn are n values of a variable X, then the arithmetic mean or simply the mean of these values is denoted by and is defined as= =Here the symbol denotes the sum x1, x2, x3, ....., xn.If is the mean of n observations x1, x2, x3,.....,xn, then the mean of … [Read more...] about What is Mean and What are its Advantages and Disadvantages