# 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.
Copyright © 2012, Campbell R. Harvey. All Rights Reserved.

## 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.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved

## 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.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.
References in periodicals archive ?
Moreover, we observed a fine incremental effect, testing the HbA1c as a continuous variable as well, not only as a categorical one.
To test for bivariate correlation of continuous variables to MR-proADM concentrations, we used Spearman correlation coefficient.
Correlation coefficient between two continuous variables in single group
LS: The hardware required to arrange a continuous variable transmission is far less efficient than the classic manual type gearbox.
Due on sale in early 2009, the one everybody will want will have an all-alloy 3.8 V6 engine with continuous variable valve timing that's good for a brawny 250lb/ft of torque, giving an estimated 160 and a sixty dash of under six seconds.
It has 2600W and produces a continuous variable steam.
The blender's continuous variable speed dial ranges in speed from 1,000 revolutions per minute to 24,000 revolutions per minute.
"The architecture of the Beta motor is the same," says Krafcik, "but literally hundreds of improvements have been made to the engine." The Beta retains an iron block and aluminum DOHC head with continuous variable valve timing, and is available either in ULEV (Federal) or PZEV (California) states of tune.
The following model was specified: [Y.sub.t] = [B.sub.0] + [B.sub.1] x preslope + [B.sub.2] x postslope + [B.sub.3] x intervention + [e.sub.t], where [Y.sub.t] is the outcome (e.g., CDAD incidence) in month t, preslope is a continuous variable indicating time from the start of the study up to the last point in the preintervention phase and coded constant thereafter, postslope is coded 0 to and including the first point postintervention and coded sequentially from 1 thereafter, and intervention is coded 0 for preintervention time points and 1 for postintervention time points.
Steering on the V6s gets computer controlled continuous variable hydraulic assistance and other driving-security aids include an electronic stability programme.
Steering on the V6s gets computer-controlled continuous variable hydraulic assistance and other driving-security aids include an electronic stability programme.
A first multivariate analysis assessed associations between employment changes and infant birth weight as a continuous variable, taking into account other factors possibly influencing birth weight (maternal age, race and prepregnancy weight; alcohol use and smoking during pregnancy; and infant sex).

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