independent variable

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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.

References in periodicals archive ?

Research questions appropriately addressed with single-subject methods (a) examine causal, or functional, relations by examining the effects that introducing or manipulating an independent variable (e.

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This unexplained variance may be random fluctuations or it may be a variation that is explained by some other independent variable.

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Gay and Airasian (2000) explain how control is a primary characteristic of experimental studies: "Direct manipulation by the researcher of at least one independent variable is the one single characteristic that differentiates experimental research from other types of research.

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The OLS and logistic regression results are presented for the full model and each independent variable.

A comparison of ordinary least squares and logistic regression (1)

Multicollinearity occurs when two or more independent variables are highly correlated to each other, making a regression model statistically unreliable because each independent variable is not really explaining anything different about the dependent variable.

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The data set under study comprises of binary dependent variable (public versus private schools) and thirty-five (35) independent variables that were assumed to discover the qualities of public and private schools teachers.

APPLICATION OF LOGISTIC REGRESSION ANALYSIS TO SCHOOL DATA

In case of direct causal effect of leadership styles on the dependent variable, job satisfaction, the significant path coefficients for H12, H13, H14, and H15 affirmed that all four independent variables have direct effect on the level of job satisfaction.

Relationship between Leadership Styles of School Heads and their Teachers' Job Satisfaction as Moderated by Locus of Control and Task Structure

The purpose of multiple regression (a term used by Pearson, 1908) is to highlight the relation between a dependent variable (explained, endogenous or resultant variables) and a lot of independent variables (explanatory, factor, exogenous, predictor ones).

The prediction of economic evolution through regression and extrapolation

05level, the meaningful relationship exists between independent variable (accuracy of profit forecast) and dependent variable (spent costs sticky of sold goods).

Investigating bazar productivity forecast error and adjusted profit using cost behavior

The responses were later tabulated and analyzed using regression analysis to understand the effect of the independent variables on the dependent variables.

Factors for Better Selection of Business Universities in Karachi: Perspective of Students

Probability value dealing with null hypothesis accounting for being no relationship between independent variable of asset return ratio and dependent variable of stock price is lower than 0.

Studying the effect of assets return rate on stock price of the companies accepted in Tehran stock exchange

Model 4: To understand the impact of each independent variable while raising short term debt for private sector companies

Comparison of capital structure determinants of public sector and private sector companies in India