# Variable

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## 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 ?
On the other hand, for intermediate values of eccentricity, the length of the series using an appropriate anomaly is lower than if the mean anomaly is used as temporal variable.
We also obtain the differential equations of motion using an arbitrary general Sundman anomaly as temporal variable.
Four temporal variables were measured: Phonation/Time Ratio; Speech Rate; Articulation Rate; and Mean Length of Run.
Exploratory Multivariate Correspondence Analysis was used to find associations between categories of temporal variables ([RT.sub.s], [RT.sub.m] and ([RT.sub.1]) and performance ([SB.sub.1]and [SA.sub.1]; [SB.sub.r] and [SA.sub.r]; [SB.sub.g] and[ SA.sub.g]; [SB.sub.e] and [SA.sub.e]).
Removing the interaction with temporal variables, the percentage of explanation decreased approximately 1%.
With respect to temporal variables, ND showed a significant negative correlation with the pellet persistence index ([R.sub.s] = 0.07, N = 1,202, P = 0.02).
The reliability of the temporal variables ([tF.sub.max] and tTotal) has been proven to be very weak in terms of both the relative as well as the absolute indexes.
The agreement between the solutions obtained using the proposed method and the traditional FDTD method, and the inverse Fourier transform of the frequency domain analytic solution is excellent as a function of both the spatial and the temporal variables.
Temporal variables, including past and future, are indicative structural elements in the newspaper construction of social reality.

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