Mathematics and Physics. A quantity or force which, throughout a mathematical calculation or investigation, is assumed to vary or be capable of…

A quantity or attribute having a numerical value for each member of a population; esp. one for which the values occur according to a frequency…

a variable whose values are distributed in accordance with a probability distribution; a variate.

= random variable n.

any of the independent variables in a regression equation; = regressor, n.

Statistics. A variable whose value can be used in the estimation of another variable. More fully predictor variable.

Any of the independent variables in a regression equation. Also regressor variable.

a variable which expresses the difference between the two sides of an inequality.