Average Solutions & Questions For IBPS, SBI and Other Bank Exams

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AVERAGE SOLUTIONS

Average= Sum of observations / Number of observations.
Suppose a person covers a certain distance at a speed of x kmph and an equal distance at a speed of y kmph, then the average speed during the whole journey is given by (2xy/x+y) kmph.
Average is also called the “mean” or mean value of all the values.
If the value of each term is increased by the same value ‘x’, then the average of the terms will also increase by ‘x’.
If the value of each term is decreased by the same value ‘x’, then the average of the terms will also decrease by ‘x’.
If the value of each term is multiplied by the same value ‘x’, then the average of the terms will also get multiplied by ‘x’.
If the value of each term is divided by the same value ‘x’, then the average of the terms will also get divided by ‘x’.
The average of a group of terms will always lie between the smallest value in the group & largest value in the group.

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