Variability

Variability is how spread out or closely clustered a set of data is.

Variability may refer to:

Biology

 * Genetic variability, a measure of the tendency of individual genotypes in a population to vary from one another
 * Heart rate variability, a physiological phenomenon where the time interval between heart beats varies
 * Human variability, the range of possible values for any measurable characteristic, physical or mental, of human beings

Other sciences

 * Climate variability, changes in the components of Earth's climate system and their interactions
 * Spatial variability, when a quantity that is measured at different spatial locations exhibits values that differ across the locations
 * Statistical variability, a measure of dispersion in statistics