Exam 10: Independent Groups T -Test
Exam 1: Introduction and Mathematical Preliminaries146 Questions
Exam 2: Frequency and Probability Distributions150 Questions
Exam 4: Percentiles percentile Ranks standard Scores and the Normal Distribution176 Questions
Exam 5: Pearson Correlation and Regression: Descriptive Aspects152 Questions
Exam 3: Measures of Central Tendency and Variability154 Questions
Exam 7: Estimation and Sampling Distributions151 Questions
Exam 8: Hypothesis Testing: Inferences About a Single Mean160 Questions
Exam 6: Probability149 Questions
Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships150 Questions
Exam 10: Independent Groups T -Test149 Questions
Exam 13: One-Way Repeated Measures Analysis of Variance140 Questions
Exam 14: Pearson Correlation and Regression: Inferential Aspects143 Questions
Exam 15: Chi-Square Test145 Questions
Exam 16: Nonparametric Statistics135 Questions
Exam 17: Two-Way Between-Subjects Analysis of Variance117 Questions
Exam 18: Overview and Extension: Statistical Tests for More Complex Designs124 Questions
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The total variability in the dependent variable,as represented by SSTOTAL,can be split up,or partitioned,into two components,one (SSEXPLAINED)reflecting the influence of the independent variable and one (SSERROR)reflecting the influence of disturbance variables.
(True/False)
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How do we determine what the nature of the relationship is between two variables?
(Essay)
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Which of the following conditions would make it inappropriate to use an independent-groups t test?
(Multiple Choice)
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The standard deviation of the sampling distribution of the difference between two independent means is called the standard error of the difference between two independent means or,more simply,the standard error of the difference.
(True/False)
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The nature of the relationship in the independent groups t-test is determined by examining___.
(Short Answer)
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The proportion of sample variability in the dependent variable that is explained by the independent variable is called eta-squared.
(True/False)
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The null hypothesis for an independent groups t test states that _____.
(Multiple Choice)
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A physical therapist is interested in whether people with different bone structures will be affected differently by her new therapy program.She randomly chooses two groups of patients based on bone type: small-boned frame (XS)and large-boned frame (XL).Patients all had similar injuries.She measures the number of days each person takes to progress to a predetermined point.Here is the data:
What is the null hypothesis?
(Multiple Choice)
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As the alpha level becomes larger,the power of a statistical test ____.
(Multiple Choice)
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The degrees of freedom associated with independent Groups t-test is_________.
(Short Answer)
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What is the rationale for calculating eta-squared following a nonsignificant statistical test?
(Essay)
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The nature of the relationship in the independent groups t test is determined by examining:
(Multiple Choice)
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Given the following information,find eta2.SSTOTAL = 653,SSERROR = 405,SSEXPLAINED = 248.
(Multiple Choice)
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The measure of the strength of the relationship between the independent and dependent variables in the "cold/warm environment" data is ____.
(Multiple Choice)
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Given the following information,find eta2.t = 2.5,n1 = 20,n2 = 18
(Multiple Choice)
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Treatment effects are defined as the difference between a given _____ and the _____.
(Multiple Choice)
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The standard error of the difference becomes smaller as sample sizes _____ and the variability of the populations_____.
(Multiple Choice)
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