Exam 17: The Chi-Square Statistic: Tests for Goodness of Fit and Independence
Exam 1: Introduction to Statistics76 Questions
Exam 2: Frequency Distributions74 Questions
Exam 3: Central Tendency75 Questions
Exam 4: Variability75 Questions
Exam 5: Z-Scores: Location of Scores and Standardized Distributions77 Questions
Exam 6: Probability76 Questions
Exam 7: Probability and Samples: the Distribution of Sample Means77 Questions
Exam 8: Introduction to Hypothesis Testing76 Questions
Exam 9: Introduction to the T Statistic74 Questions
Exam 10: The T Test for Two Independent Samples75 Questions
Exam 11: The T Test for Two Related Samples76 Questions
Exam 12: Introduction to Analysis of Variance74 Questions
Exam 13: Repeated-Measures Analysis of Variance Anova75 Questions
Exam 14: Two-Factor Analysis of Variance Independent Measures75 Questions
Exam 15: Correlation76 Questions
Exam 16: Introduction to Regression75 Questions
Exam 17: The Chi-Square Statistic: Tests for Goodness of Fit and Independence75 Questions
Exam 18: The Binomial Test75 Questions
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A chi-square test for independence has df = 2.What is the total number of categories (cells in the matrix)that were used to classify individuals in the sample?
(Multiple Choice)
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What conclusion is appropriate if a chi-square test produces a chi-square statistic near zero?
(Multiple Choice)
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Cramér's V is used to measure effect size for the chi-square test for independence and is superior to Cohen's w because it makes allowances for the size of the data matrix.
(True/False)
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Although the outcome for a chi-square test for independence is influenced by sample size,measures of effect size such as the phi-coefficient or Cramér's V are not.
(True/False)
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In a chi-square test for independence or goodness of fit,____.
(Multiple Choice)
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The chi-square test for independence uses the same formula for the chi-square statistic as the chi-square test for goodness-of-fit.
(True/False)
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A chi-square test for independence is being used to evaluate the relationship between two variables,one of which is classified into three categories and the second of which is classified into four categories.The chi-square statistic for this test would have a df value equal to ____.
(Multiple Choice)
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A researcher selects a sample of 100 people to investigate the relationship between gender (male/female)and registering to vote.The sample consists of 40 females,of whom 30 are registered voters,and 60 males,of whom 40 are registered voters.If these data are used for a chi-square test for independence,what is the expected frequency for registered females?
(Multiple Choice)
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Which of the following accurately describes the chi-square test for independence?
(Multiple Choice)
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For a given alpha level,what happens to the critical value for a chi-square test if the number of categories is increased?
(Multiple Choice)
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Cohen's w is a measure of effect size that can be used for both the chi-square test for independence and for goodness of fit.
(True/False)
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What values are specified by the null hypothesis for the chi-square test for goodness of fit?
(Multiple Choice)
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Under what conditions is Cramér's V used to measure effect size for a chi-square test for independence?
(Multiple Choice)
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How does the difference between fe and fo influence the outcome of a chi-square test?
(Multiple Choice)
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What is indicated by a large value for the chi-square statistic?
(Multiple Choice)
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One characteristic of the chi-square tests is that they can be used when the data are measured on a nominal scale.
(True/False)
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A chi-square test for goodness of fit is used to examine the distribution of individuals across three categories,and a chi-square test for independence is used to examine the distribution of individuals in a 2 X 2 matrix of categories.Which test has the larger value for df?
(Multiple Choice)
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For a chi-square test,the expected frequencies are calculated values that are intended to produce a sample that is representative of the null hypothesis.
(True/False)
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Under what circumstances will the chi-square test for goodness of fit produce a large value for a chi-square?
(Multiple Choice)
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For the chi-square test for goodness-of-fit,the researcher must select a sample with an equal number of individuals in each category.
(True/False)
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