Simple Averages
Concepts Examples

Properties of Averages

1. Average of N things/quantities is equal to the sum of all the things/quantities divided by number of things/quantities.

2. Average of N number of things/quantities always lies between the lowest and the highest quantities.

3. If each quantity is increased by a certain value K, then the new average is increased by K.

4. If each quantity is decreased by a certain value K, then the new average is decreased by K.

5. If each quantity is multiplied by a certain value K, then the new average becomes K times the the original average.

6. If each quantity is divided by a certain value K, then the new average becomes $\frac{1}{K}$1K  times the the original average.