Q.Q15 - Regression Analysis

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University of Texas, Arlington *

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4322

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Statistics

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Jan 9, 2024

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docx

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Q.Q15 - Regression Analysis 1) Enter matching question text. Group of answer choices Simple Regression Analysis  Bivariate regression analysis using only one predictor variable in the equasion Dependent Variable  t he variable, termed y, this is predicted by the regression analyses Independent Variable  a variable (often denoted by x ) whose variation does not depend on that of another. Multiple Regression Analysis  an expansion of bivariate regression analysis in that more than one independent variable is used in the regression equation 2) What is a satisfactory method for improving a regression analysis?  Use a scatter diagram to identify outlier pairs of points 3) With multiple regression, you work with a ________ rather than a line.  regression plane 4) Multiple R ranges from ________ and represents the amount of the dependent variable "explained," or accounted for, by the combined independent variables.  0 to +1.0 5) What is the primary term for "coefficient of determination," a handy measure of the strength of the overall linear relationship?  Multiple R 6) A multiple regression result is an estimate of the population multiple regression equation and, just as is the case with other estimated population parameters, it is necessary to test for what?  Statistical significance. 7) The presence of correlations among the independent variables in multiple regression is termed:  Multicollinearity. 8) Because independent variables are often measured with different units, it is erroneous to make ________ between the calculated betas.  direct comparisons 9) When a researcher has many independent variables and wants to narrow the set down to a smaller number, which form of regression is useful?  Stepwise multiple regression 10) Regression analysis springs from ________, which is a measure of the linear association and not the causal relationship between two variables.

 correlation analysis

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