Dispersion

What Does Dispersion Mean?
A term used in statistics that refers to the location of a set of values relative to a mean or average level.

Investopedia explains Dispersion
In finance, dispersion is used to measure the volatility of different types of investment strategies. Returns that have wide dispersions are generally seen as more risky because they have a higher probability of closing dramatically lower than the mean. In practice, standard deviation is the tool that is generally used to measure the dispersion of returns.