The arithmetic mean is the average of all values. Add all of the values together and divide by the number of values.
Suppose you want to find the arithmetic mean of n numbers, which are x1, x2, x3, ... , xn.
Then the arithmetic mean = (x1 + x2 + x3 + ... + xn)/n , that is, the sum of all the values whose mean you want, divided by the number of values.
Example: values 2, 8, 11
The sum of the three is 21, divided by three gives the mean = 7
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It is not possible to place 8 arithmetic means between two numbers since they can have only one arithmetic mean not eight! The one-and-only arithmetic mean of 2 and 17 is (2+17)/2 = 9.5
The average of your grades that appears on your report card is the arithmetic mean.
Sequence that has addition or (subtractions*) subtraction will be +(-4)
x + 5x + 6x = 12x. There are 3 terms. If the arithmetic mean is 8 then 12x = 3 x 8 = 24 : So, x = 24 ÷ 12 = 2.
Order of Operations