Exam 17: Understanding Regression Analysis

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For a multiple regression,we typically report which value that is not often reported for a one factor linear regression analysis?

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B

To standardize the coefficients,we first convert the original data to standardized z scores.

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True

A statistical method that includes two or more predictor variables in the equation of a regression line to predict changes in a criterion variable is called

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D

We can evaluate the significance of the relative contribution of each factor by first determining the differences between group means.

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In a sample of 22 participants,suppose we conduct an analysis of regression with one predictor variable.If In a sample of 22 participants,suppose we conduct an analysis of regression with one predictor variable.If   = 4.07,then what is the decision for this test at a .05 level of significance? = 4.07,then what is the decision for this test at a .05 level of significance?

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A researcher computes the following analysis of regression table.Based on the data given,what is the value of the standard error of estimate? (Note: Complete the table first. ) A researcher computes the following analysis of regression table.Based on the data given,what is the value of the standard error of estimate? (Note: Complete the table first. )

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The standardized beta coefficient, β\beta ,reflects the distinctive contribution of each criterion variable.

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In an analysis of regression there are three sources of variation: regression,residual,and error.

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The predictor variable is a known value that is used to predict the value of another variable.

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If the coefficient of determination is 0.12 and If the coefficient of determination is 0.12 and   = 225,then what is the sum of squares regression for an analysis of regression? = 225,then what is the sum of squares regression for an analysis of regression?

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The data points for pairs of scores are often summarized in a bar chart.

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Which of the following is not needed to compute the slope using the method of least squares?

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When most of the variability in Y is attributed to regression variation,it is more likely that X predicts Y.

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The numerator of the formula for the slope (b)of a regression line is equal to the sum of products.

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A researcher computes an analysis of regression with 1 and 25 degrees of freedom.If F = 5.34,then the decision will be that X is a significant predictor of variation in Y.

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The scores or data points for a regression analysis are typically reported in,

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To standardize the beta coefficients,we first,

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Both sources of variation in an analysis of regression measure the variability in

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The equation for the standardized regression equation is,

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Including two or more predictor variables into a single equation of a regression line can be more informative than an analysis using only one predictor variable.

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