Any quantity that varies. Any attribute, phenomenon or event that can have different values.
n. (in statistics) any characteristic (e.g. age, lifestyle, or habit) relating to an individual or group that can take a number of different values. Categorical or qualitative variables are descriptive characteristics, such as sex, race, or occupation; quantitative variables relate to a numerical scale and are subdivided into discrete variables, found only at fixed points (e.g. number of children), and continuous variables, found at any point on a scale (e.g. weight). See also confounding; correlation.
In a statistical analysis, the outcome variable(s) or the variable(s) whose values are a function of, or dependent on the effect of other variable(s) (called independent variables) in the relationship under study.... dependent variable