# Variable

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Related to Continuous variable: discrete variable

## 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 ?
To test for bivariate correlation of continuous variables to MR-proADM concentrations, we used Spearman correlation coefficient.
In this experiment, using AXI generates continuous variable data which indicate the wetting performance of each combination of process variables.
This classification strategy has the following advantages: (i) the process responds to the optimization of two related objective functions, in the first stage the sum of squares within groups and in the second stage the likelihood function of the observations; (ii) it is linked to a method for defining the optimum number of groups; (iii) it allows calculation of a measure of the group's precision (quality) because it assigns to each observation a probability of membership to the group; and (iv) it uses all the available information, that is, the continuous variables as well as the categorical variables.
Means, standard deviations, and Pearson correlations for all continuous variables are presented in Table 1.
The problem with analyzing it as a continuous variable is that an offense count is usually positively skewed, thereby violating an assumption of most significance tests.
The independent variable is the number of flights, which is a continuous variable.
It has a development of continuous variable transmission (CVT), with electro-mechanical control and some enhanced driver functions.
5-litre i-VTEC engine with a Continuous Variable Transmission developed under Honda's Earth Dreams Technology.
It is powered by a new 240bhp, 1,750cc turbo petrol engine, including direct fuel injection, dual continuous variable valve timing and a revolutionary scavenging control system that gets rid of any turbo lag.

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