For example, a city might receive ... results to fall outside the standard deviation, but usually they fall within one standard deviation. The same concept applies to investment returns.

The greater the standard deviation of securities, the greater the variance between each price and the mean, which shows a larger price range. For example ... and patterns in sales data that ...

The normal distribution is a key concept in statistics ... the normal distribution pattern, its mean will enable us to know what returns to expect, and its standard deviation will enable us ...