Variance: An Overview Standard deviation and variance are two basic mathematical concepts that have an important place in ...

Values are within two standard deviations ... an investment's excess returns by its standard deviation. Standard deviation is a key metric for understanding the risk of an investment or portfolio.

Standard deviation measures how far numbers in a data set are spread out from an average value. In investing, it is used as a measurement of portfolio volatility.

In opinion polling, standard deviations are a key part of calculating ... measurements tend to be from the mean value of a data set. The standard deviation of company A's employees is 1, while ...

Key findings are powered by ChatGPT ... When data is normally distributed, 68% of the values fall within one standard deviation, and 95% of the values fall within two standard deviations.

Standard deviation is a method of measuring data dispersion in regards to the mean value of the dataset and provides a measurement regarding an investment’s volatility. As it relates to ...