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 ?
2 Photomicrographs show a tumour composed of variably sized tubules (a: Hematoxylin and eosin stain [H&E] x100) and cystic spaces (b: H&E x100) that are separated by thin, hypocellular fibrovascular septae (c: H&E x200), with the lining epithelium showing tombstone appearance focally (d: H&E x200); the tubules are lined by atypical cuboidal to pseudostratified ciliated columnar cells (arrow) with abundant eosinophilic cytoplasm (e: H&E x400), large round to ovoid nuclei with prominent nucleoli (f: H&E x400) and hobnail appearance (g: H&E x600); solid areas show smaller tubules lined by similar atypical cells in a sclerotic stroma (h: H&E x200; i: H&E x400).
The upper part of the hole intersected variably altered
In addition, the Palomas Neanderthals variably exhibit a series of modern human features rare or absent in earlier Neanderthals, which suggests that they might have mixed with modern humans.
The variably perforated panels veil the structure and filter the light, turning the building into a delicately glowing lantern after dark.
His side has so often let themselves down when it comes to Premiership clashes against other leading clubs, but European matches are totally different, and in variably the Reds rise to the occasion.
Our patient had an adipocytic WDL; on microscopic examination, his tumor clearly demonstrated the classic histopathologic characteristics of liposarcomas: variably sized mature adipocytes, widened fibrous septa, lipocytic atypia and, most important, lipoblasts with multivacuolated cytoplasm and scalloped nuclei (figure 2).
Described as "a force of nature on the stage", she rose from humble beginnings in New York through many obstacles to a legendary status as a variably experienced opera singer.
Indeed, >80% of humans harbor variably high viral loads of TTV, TTMV, or both, in plasma, regardless of geographic provenance, age, sex, and health conditions (1).
The system uses workpiece counter-rotation and high speed drilling in order to maintain concentricity--counter-rotation allows variable speeds from 500rpm to 1,5000rpm, while the drill can be variably controlled from 5,000rpm to 20,000rpm.
The counter-rotation feature allows variable speeds from 500 to 1,500 rpm, while the drill can be variably controlled from 5,000 to 20,000 rpm.
As an informative and ably researched interpretation and competently editing of the original memoir, Kirby Ross variably adds key bits of information relevant to our understanding of a Civil War soldier's intricate life.
Benefits can be derived either from their variably invested portfolio, or they can covert their contracts into fixed immediate annuities, which would provide fixed income streams.