Average

Average:

Average = (Sum of observations/Number of observations)

Average Speed:

Suppose a man covers a certain distance at x kmph and an equal distance at y kmph.

Then, the average speed druing the whole journey is (2xy/x + y) kmph.

For example:Average of 1,2,3,4,5 then
                 
            1+2+3+4+5/5=3

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