This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Statistics A random variable with a numerical value that is defined on a given sample space.

n. A measurable quantity capable of taking on a number of values.

n. A variable, often the set of x values plotted on a graph.

v. To alter; or vary; to make different.

v. To alter; to make different; to vary.

n. A single magnitude-determination of a character or quality common to a number of individuals.

To make different; vary; diversify.

To alter; vary; change.

Varied; variegated; diverse.

n. a variable quantity that is random

"But, yeah, you could get all fancy and run a multi-variate analysis to control for all kinds of factors."

variable quantity    variable   

Mathworld    com    univariate    in    Wolfram    http    mathworld    multivariate    wolfram    html   

alter    vary    change    diversify    variegated