Liberty University Online Academy : PSYC 355 Quiz 8; questions and answers

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PSYC 355 quiz 8 202140 Fall 2021 PSYC 355- B08 LUO Quiz: Chi-Square Tests and Module 8 Article • Question 1 What values are specified by the null hypothesis for a chi-square test? ... • Question 2 In the observed frequencies for a chi-square test for independence, how often is each participant counted? • Question 3 A sample of n = 100 people is classified into four categories. If the results are evaluated with a chi-square test for goodness of fit, what is the df value for the chi-square statistic? • Question 4 A researcher is using a chi-square test to determine whether people have any preferences among three brands of televisions. The null hypothesis for this test would state that . • Question 5 Which of the following accurately describes the observed frequencies for a chi-square test? • Question 6 What values are specified by the null hypothesis for the chi-square test for goodness of fit? • Question 7 A chi-square test for goodness of fit has df = 2. How many categories were used to classify the individuals in the sample? • Question 8 A chi-square test for independence is being used to evaluate the relationship between two variables. If the test has df = 1, what can you conclude about the two variables? • Question 9 Which of the following best describes the possible values for a chi-square statistic? • Question 10 The phi-coefficient is used to evaluate effect size for the chi-square test for independence, provided the test has df > 1. • Question 11 The chi-square test for goodness of fit evaluates the distribution for one variable, and the test for independence evaluates the relationship between two variables. • Question 12 The data for a chi-square test are called observed frequencies. • Question 13 A large value for the chi-square statistic indicates a large discrepancy between the sample data and the hypothesis. • Question 14 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. For a fixed level of significance, the critical value for chi-square increases as the degrees of freedom increase. [Show More]

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