# Variable

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Related to Variable: variable annuity

## Variable

An element in a model. For example, in the model RS&Pt+1 = a + b Tbill t + et, where RS&Pt+1 is the return on the S&P in month t+1 and Tbill is the Tbill return at month t, both RS&P and Tbill are "variables" because they change through time; i.e., they are not constant.

## Variable

Anything that does not have a set value. In basic algebra, a variable is often expressed as "x." Variables in economics and finance may be measures such as GDP, prices, or interest rates. Analysts use complicated equations to determine the value of some variables at the present time and even more complicated equations to predict their possible future values. See also: Regression.

## variable

Something, such as stock prices, earnings, dividend payments, interest rates, and gross domestic product, that has no fixed quantitative value. See also dependent variable, independent variable.
References in periodicals archive ?
The tax advantages and the opportunity to build wealth made the variable universal product attractive to Ron Tigner, president of Georgia Certified Development Corp.
TRIALS: Number of times an experiment is repeated for each level, or value, of the independent variable.
We examined the relationship between AGI and testicular descent in several ways, varying whether each of these variables was entered into the analysis untransformed (e.
Risk: A distinction between variable and fixed annuities is investment risk.
Another condition that favored development of the variable annuity was the state of corporate America in the 1950s.
However, if the income variable data were skewed, the median or modal value would be more appropriate.
This study supports the conclusion that school placement decisions are an important variable in predicting student outcomes.
Academic resilience has been linked to academic and career success (Finn & Rock, 1997); however, little is known about ethnic differences on this variable.
In contrast, when clauses each contain three variables, increasing the total number of variables means that the solution time grows exponentially in the worst case.
Head height was not a variable in Basic Foundry A because the entire heat was used to pour the selected casting.