| 释义 |
independent variable
independent variablen.1. Mathematics A variable whose value determines the value of other variables.2. Statistics A manipulated variable in an experiment or study whose presence or degree determines the change in the dependent variable.independent variable n 1. (Mathematics) Also called: argument a variable in a mathematical equation or statement whose value determines that of the dependent variable: in y = f(x), x is the independent variable 2. (Statistics) statistics Also called: predictor the variable which an experimenter deliberately manipulates in order to observe its relationship with some other quantity, or which defines the distinct conditions in an experiment. See also experimental condition in′depend′ent var′iable
n. a variable in a functional relation whose value determines the value or values of other variables, as x in the relation y= 3x2. [1850–55] in·de·pen·dent variable (ĭn′dĭ-pĕn′dənt) Mathematics A variable whose value determines the value of other variables. For example, in the function y = x - 4, x is the independent variable because its value determines the value of y.Thesaurus| Noun | 1. | independent variable - (statistics) a variable whose values are independent of changes in the values of other variablesexperimental variablevariable quantity, variable - a quantity that can assume any of a set of valuesfactor - an independent variable in statisticsstatistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters |
independent variable
independent variable[‚in·də′pen·dənt ′ver·ē·ə·bəl] (mathematics) In an equation y = ƒ(x), the input variable x. Also known as argument. independent variable the VARIABLE which is experimentally manipulated, or otherwise controlled, in order to observe its effect. For example, the speed limit may be systematically varied on certain roads and the effect of this measured in terms of road accident statistics. The speed restrictions would be the independent variable, the road accident figures the DEPENDENT VARIABLE. However, in social research it is often not possible to set up experiments to test theories, and observations have to be made from retrospective occurrences. Thus a study may be made, for example, of the effect of age of marriage on family size. In this example, age of marriage would be the independent variable, and family size would be the dependent variable. see also EXPERIMENTAL METHOD.independent variable
variable [var´e-ah-b'l] something that changes; an attribute or property of a person, event, or object that is known to vary in a given study.dependent variable in a mathematical equation or relationship between two or more variables, a variable whose value depends on those of others; it represents a response, behavior, or outcome that the researcher wishes to predict or explain.extraneous variable a factor that is not itself under study but affects the measurement of the study variables or the examination of their relationships.independent variable in a mathematical equation or relationship between two or more variables, any variable whose value determines that of others; it represents the treatment or experimental variable that is manipulated by the researcher to create an effect on the dependent variable.in·de·pen·dent var·i·a·blea characteristic being measured or observed that is hypothesized to influence another event or manifestation (the dependent variable) within a defined area of relationships under study; that is, the independent variable is not influenced by the event or manifestation, but may cause it or contribute to its variation. See: dependent variable. in·de·pen·dent var·i·a·ble (in'dĕ-pen'dĕnt var'ē-ă-bĕl) statistics A variable that is manipulated by the researcher and measured by the effect it has on the dependent variable or variables. in·de·pen·dent var·i·a·ble (in'dĕ-pen'dĕnt var'ē-ă-bĕl) Characteristic being measured or observed that is hypothesized to influence another event or manifestation within a defined area of relationships under study.LegalSeeArgumentindependent variable
Independent variableTerm used in regression analysis to represent the element or condition that is expected to influence another (so-called dependent) variable.Independent VariableIn technical analysis, a variable whose value is not determined by the value of other variable(s), but rather determines the value of those other variable(s). For example, if a product's price is determined by some equation involving the product's supply and its demand, supply and demand are independent variables because together they determine the product's price. See also: Dependent variable.independent variable A variable that is not affected by any other variables with which it is compared. For example, in comparing the price of an electric utility stock with interest rates, the interest rates are an independent variable because they are not affected by utility stock prices. Compare dependent variable.independent variable a variable that affects some other variable in a model. For example, the price of a product (the independent variable) will influence the demand for it (the DEPENDENT VARIABLE). It is conventional to place the independent variable on the right-hand side of an EQUATION. See DEMAND FUNCTION, SUPPLY FUNCTION.AcronymsSeein vitroindependent variable
Synonyms for independent variablenoun (statistics) a variable whose values are independent of changes in the values of other variablesSynonymsRelated Words- variable quantity
- variable
- factor
- statistics
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