Exam 17: Understanding Regression Analysis
Exam 1: Introduction to Statistics80 Questions
Exam 2: Summarizing Data: Frequency Distributions in80 Questions
Exam 3: Summarizing Data: Central Tendency80 Questions
Exam 4: Summarizing Data: Variability80 Questions
Exam 5: Probability, Normal Distributions, and Z Scores80 Questions
Exam 6: Characteristics of the Sample Mean79 Questions
Exam 7: Hypothesis Testing: Significance, Effect Size, and Power79 Questions
Exam 8: Testing Means: One-Sample T Test With Confidence Intervals80 Questions
Exam 9: Testing Means: Two- Independent-Sample T Test With Confidence Intervals76 Questions
Exam 10: Testing Means: Related-Samples T Test With Confidence Intervals79 Questions
Exam 11: One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs60 Questions
Exam 12: Two-Way Analysis of Variance: Between-Subjects Factorial Design80 Questions
Exam 13: Correlation and Linear Regression80 Questions
Exam 14: Chi-Square Tests: Goodness of Fit and the Test for Independence78 Questions
Exam 15: Nonparametric Tests for Ordinal Data: Understanding and Interpretation59 Questions
Exam 16: Chi-Square Tests: Goodness-of-Fit and Independence80 Questions
Exam 17: Understanding Regression Analysis80 Questions
Exam 18: Understanding Correlation Coefficients in Statistical Analysis80 Questions
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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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(Multiple Choice)
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Correct Answer:
B
To standardize the coefficients,we first convert the original data to standardized z scores.
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(True/False)
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Correct Answer:
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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(Multiple Choice)
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Correct Answer:
D
We can evaluate the significance of the relative contribution of each factor by first determining the differences between group means.
(True/False)
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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?

(Multiple Choice)
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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. ) 

(Multiple Choice)
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The standardized beta coefficient, ,reflects the distinctive contribution of each criterion variable.
(True/False)
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In an analysis of regression there are three sources of variation: regression,residual,and error.
(True/False)
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The predictor variable is a known value that is used to predict the value of another variable.
(True/False)
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If the coefficient of determination is 0.12 and
= 225,then what is the sum of squares regression for an analysis of regression?

(Multiple Choice)
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The data points for pairs of scores are often summarized in a bar chart.
(True/False)
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Which of the following is not needed to compute the slope using the method of least squares?
(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 numerator of the formula for the slope (b)of a regression line is equal to the sum of products.
(True/False)
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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.
(True/False)
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The scores or data points for a regression analysis are typically reported in,
(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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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.
(True/False)
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