Investors use standard deviation as a proxy for volatility. To interpret standard deviation as it pertains to volatility, you must understand the assumptions of a normal bell curve.

Step 4: Calculate standard deviation of the returns using the STDEV function. Note : The average and standard deviation are expressed as percentages, while the variance is a decimal number ...

A bell curve is a symmetric curve centered around the mean, or average, of all the data points being measured. The width of a bell curve is determined by the standard deviation—68% of the data ...

Standard deviation is a statistic measuring the dispersion of a dataset relative to its mean. It is calculated as the square root of the variance. Learn how it's used.

The width of a bell curve is determined by its standard deviation (or σ), which represents each data point's deviation relative to the mean. Approximately 68% of the data lies within one standard ...

Gaussian curves, normal curves and bell curves are synonymous. ... If you know your data mean and its standard deviation, ... Click "OK" to calculate your histogram data.