"variables" - key terms from Wikipedia

basic variables
between the variables
between two variables
blocking condition variables
boolean variables
cepheid variables
change of variables
complex variables
condition variables
conjugate variables
convergence of random variables
cross tabulations when both variables
dependent variables
distributed random variables
environment variables
environmental variables
exogenous variables
explanatory variables
extrinsic variables
five variables
free variables
hidden variables
independent random variables
independent variables
instance variables
latent variables
lexical variables
local variables
metasyntactic variables
natural variables
normal random variables
number of variables
one or more type variables
other variables
output variables
predictor variables
propositional variables
random variables
real random variables
relationships between variables
separation of variables
session variables
shared variables
special variables
state variables
these variables
two random variables
two variables
variables
when both variables	are measured