variability

The possible range of outcomes for any given event.

Investopedia Says:
Greater variability is associated with higher risk because it increases the amount of unknown possible outcomes. For example, an investment whose return experiences great changes has high variability. A security with a fixed rate of return, such as a Treasury bill, has little to no variability.

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The degree or range of divergence of an object from a given standard or average.

The extent to which a set of observations, such as annual rainfall totals over a number of years, spreads about the mean value.

The state of being variable.

(DOD, NATO) The manner in which the probability of damage to a specific target decreases with the distance from ground zero; or, in damage assessment, a mathematical factor introduced to average the effects of orientation, minor shielding, and uncertainty of target response to the effects considered.