variables

n.

something that is likely to vary; something that is subject to variation

"the weather is one variable to be considered"

a quantity that can assume any of a set of values

同义词：variable quantity

a star that varies noticeably in brightness

同义词：variable star

a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity

Instrumental Variables Regression with Weak Instruments
Structural equations with a latent variables
Limited-Dependent and Qualitative Variables in Econometrics
Limited-dependent and qualitative variables in econometrics /
Probability Inequalities for Sums of Bounded Random Variables
Model selection and estimation in regression with grouped variables
Hydrogels for tissue engineering: scaffold design variables and applications
Evaluating structural equation models with unobservable variables and measurement error: A comment.
A Comparison of Three Methods for Selecting Values of Input Variables in the Analysis of Output From a Computer Code
A comparison of three methods for selecting values of input variables in the analysis of output from a computer code