<span>Work out the Mean (the simple average of the numbers)Then for each number: subtract the Mean and square the result.Then work out the mean of those squared differences.<span>Take the square root of that and we are done!</span></span>
<u>Answer</u>
A. Because it earns interest.
<u>Explanation</u>
We save money in the financial institutions like banks and micro-finance institutions. This institutions uses this money to do business with it such as lending it to other people, setting up other money generation activities among others.
By so doing your money must be increased since it is used in other ways. These money increase is known as interest.
So the money you save increase in value over the time because it earns interest.
Step-by-step explanation:
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