Below is an example of calculating the standard deviation of the stock returns of Apple (Nasdaq: AAPL) over a three-month period. Step 1: Collect daily data going back over a three-month period.

For example, over the last 10 years, the S&P 500's average annual return was 11.21%, and it had an annual standard deviation of about 15.25%, according to Morningstar.

When you have the average production of three machines, it is easy to calculate the average or mean production. You just add ...

Example of Using Standard Deviation Suppose a mutual fund achieves the following annual rates of return over the course of five years: 4%, 6%, 8.5%, 2%, and 4%. The mean value, or average, is 4.9%.

Standard Deviation vs. Variance Example . To demonstrate how both principles work, let’s look at an example of standard deviation and variance.

The Standard Deviation is a term used in statistics. The term describes how much the numbers if a set of data vary from the mean. The syntax to calculate the Standard Deviation is as follows: ...

Last year Johnson had a 7.7 standard deviation with a 12.3 PPG, for a value of 1.60. Most of his value (fantasy value, that is) comes from his seasons of two and three years ago.

Annualized volatility = standard deviation (volatility) multiplied by the square root of the periods in the year. For example, you might calculate the volatility of daily stock returns.

Standard deviation measures the range of an investment's performance. The greater the standard deviation, the greater the investment's volatility. We sell different types of products and services ...

You can’t determine a portfolio’s risk index by simply averaging the risk indexes of its individual holdings. This is because securities interact in complex ways, and diversification—such as holding ...