Average Related Problems
The average of given set of numbers can be expressed as:
|A =||Sum of the quantities of same kind|
|Number of quantities of the same kind.|
① Sum of Quantities = Number of quantities × Average
② Average is also called the Arithmetic Mean.
③ If all the given quantities have the same value, then the vaue itself is the average.
④ If each of the given quantities is increased/decreases by a constant N, then their average is also increased/decreased by N.
⑤ If each of the given quantities is multiplied by a constant N, then their average is also multiplied by N.
Q1: Fnd the average of first five even numbers.
Answer: A = (2 + 4 + 6 + 8 + 10)/5 = 30/5 = 6