Exam 16: Linear Regression and Multiple Regression
Exam 1: Introduction to Statistics80 Questions
Exam 2: Summarizing Data: Frequency Distributions in Tables and Graphs80 Questions
Exam 3: Summarizing Data: Central Tendency80 Questions
Exam 4: Summarizing Data: Variability80 Questions
Exam 5: Probability80 Questions
Exam 6: Probability, normal Distributions, and Z Scores80 Questions
Exam 7: Probability and Sampling Distributions80 Questions
Exam 8: Hypothesis Testing: Significance,effect Size,and Power80 Questions
Exam 9: Testing Means: One-Sample and Two-Independent-Sample T Tests80 Questions
Exam 10: Testing Means: Truehe Related-Samples T Test80 Questions
Exam 11: Estimation and Confidence Intervals60 Questions
Exam 12: Analysis of Variance: One-Way Between-Subjects Design80 Questions
Exam 13: Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign80 Questions
Exam 14: Analysis of Variance: Two-Way Between-Subjects Factorial Design80 Questions
Exam 15: Correlation80 Questions
Exam 16: Linear Regression and Multiple Regression80 Questions
Exam 17: Nonparametric Tests: Chi-Square Tests80 Questions
Exam 18: Nonparametric Tests: Tests for Ordinal Data60 Questions
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In a sample of 28 participants,suppose we conduct an analysis of regression with one predictor variable.If Fobt = 4.28,then what is the decision for this test at a .05 level of significance?
(Multiple Choice)
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We do not need to know the value of the slope to compute the value of the y-intercept of a regression line.
(True/False)
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Multiple regression is a statistical method that includes ______ predictor variable(s)in the equation of the regression line.
(Multiple Choice)
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A researcher computes an analysis of regression with 1 and 18 degrees of freedom.If F = 3.05,then the decision will be that X is a significant predictor of variation in Y.
(True/False)
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The data points for pairs of scores are often summarized in a bar chart.
(True/False)
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Linear regression is used to measure the extent to which a criterion variable causes changes in a predictor variable.
(True/False)
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For a simple linear regression with one predictor variable,we report the test statistic,degrees of freedom,and p value for the regression analysis.
(True/False)
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We can evaluate the relative contribution of each predictor variable by evaluating the significance of the added contribution of each factor.
(True/False)
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If the coefficient of determination is .32 and SSY = 150,then what is the sum of squares residual for an analysis of regression?
(Multiple Choice)
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Both sources of variation in an analysis of regression measure the variability in ______.
(Multiple Choice)
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A researcher computes a perfect negative correlation,in which each data point falls exactly on the regression line.In this example,the value of the standard error of estimate will be ______.
(Multiple Choice)
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In addition to evaluating the significance of a multiple regression equation,we also should consider ______.
(Multiple Choice)
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With multiple regression,we can use the method of least squares to find the regression equation and test for significance just as we did using simple linear regression.
(True/False)
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Using an analysis of regression,the variability in Y that is associated with error is measured by the ______.
(Multiple Choice)
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When most of the variability in Y is attributed to regression variation,it is more likely that X predicts Y.
(True/False)
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The null hypothesis for a test of the relative contribution of two predictor variables is that the variance in X will be significantly different from the variance in Y.
(True/False)
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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?
(Multiple Choice)
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