It all depends on what you want to find the average of. The most common way is adding the numbers in a data set together, then dividing by however many there are. Another is the middle (or median) of an ordered set. Finally, the most common of a data set is also considered the average. I usually prefer the method I listed first, but as earlier stated, it depends.
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in weighted average method we assigns the weight to the averages while in average methods we dnt do this
math that is done in your head
It is 1101. ****************************** Method is: (1121 + 1087 + 1095) ÷ 3 = 1101
Range = Maximum - Minimum
Geometry, or algebra (integration).