PSYC 515 Module 5: Week 5 Quiz: Non-parametric Tests Concepts Score for this quiz: 50 out of 50 Submitted Jul 18 at 7:13am This attempt took 21 minutes. Question 1 0 / 0 pts I have read and understand the Academic Honor
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PSYC 515 Module 5: Week 5 Quiz: Non-parametric Tests Concepts Score for this quiz: 50 out of 50 Submitted Jul 18 at 7:13am This attempt took 21 minutes. Question 1 0 / 0 pts I have read and understand the Academic Honor policy as outlined in the Online Honor Code for Liberty University Online. I agree to abide by this policy and that the work submitted herein is my own. Yes No Question 2 2 / 2 pts Wilcoxon rank-sum test is to _____ as Wilcoxon matched-pairs signed-ranks T test is to _____. ordinal data; nominal data interval data, ordinal data between-subject design; within-subjects design within-subjects design; between-subjects design Question 3 2 / 2 pts The calculation of the df for the χ2 test of independence is r x c - 1. (r-1)(c-1). (r-c)n. r x c. Question 4 2 / 2 pts Which of the following is not an assumption of the χ2 goodness-of-fit test? It is a nonparametric test. It is appropriate only for ordinal data. The frequency in each cell should be at least 5. The sample should be randomly selected. Question 5 2 / 2 pts Which of the following is true regarding the χ2 test of independence? It requires a numerical (quantitative) score for each individual. The sample must be random. Population parameters such as m and s must be known. The observations must not be independent. Question 6 2 / 2 pts The χ2 test of independence is used with _____ data. continuous categorical ordinal quantitative Question 7 2 / 2 pts Which of the following is not an assumption of the Wilcoxon rank-sum test? The data are ratio, interval, or ordinal in scale—all of which must be converted to ranked (ordinal) data before conducting the test. The underlying distribution is not normal. The observations are independent. There is homogeneity of variance. Question 8 2 / 2 pts Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T test? The data are ratio, interval or ordinal in scale, all of which must be converted to ranked (ordinal) data before conducting the test. The underlying distribution is not normal. The observations are independent. The other alternatives are all assumptions of the Wilcoxon matched-pairs signed-ranks test. Question 9 2 / 2 pts Which of the following is not an assumption of the χ2 test of independence? It is a nonparametric test. It is appropriate only for ordinal data. The frequency in each cell should be at least 5. The sample should be randomly selected. Question 10 2 / 2 pts The _____ is a nonparametric inferential test for comparing sample medians of two independent groups of scores. Wilcoxon matched-pairs signed-ranks T test Wilcoxon rank-sum test χ2 test for independence χ2 goodness-of-fit test Question 11 2 / 2 pts Chi-square is calculated by summing the [(_____ - _____)2 divided by _____]. observed; expected; observed expected; observed; observed observed; expected; expected observed; observed; expected Question 12 2 / 2 pts The _____ is a nonparametric inferential test for comparing sample medians of two dependent or related groups of scores. Wilcoxon matched-pairs signed-ranks T test Wilcoxon rank-sum test χ2 test for independence χ2 goodness-of-fit test Question 13 2 / 2 pts The Wilcoxon tests are used with _____ data. ordinal interval ratio nominal Question 14 2 / 2 pts Which test is most appropriate for nominal data? Wilcoxon matched-pairs signed ranks t test Chi square goodness of fit Friedman test Wilcoxon rank sum test Question 15 2 / 2 pts The nonparametric equivalent to the independent samples t-test is: Wilcoxon matched-pairs signed ranks t test Wilcoxon rank sum test Kruskal-Wallis test Friedman test Question 16 2 / 2 pts Which of the following statements is TRUE about chi square tests? always two-tailed can be used with ordinal data parametric observations can be correlated / dependent Question 17 2 / 2 pts If parametric test assumptions are violated for a study in which 20 participants completed an attention task twice — once after consuming a sugar pill and once after consuming a pill that contained 25 mg nicotine, which test would be most appropriate? Kruskal-Wallis test Friedman test Wilcoxon rank sum test Wilcoxon matched-pairs signed ranks t test Question 18 2 / 2 pts Which of the following statements is true about nonparametric tests? uses means to compare underlying distribution must be normal more assumptions than parametric tests does not assume data follows a specific distribution Question 19 2 / 2 pts If you wanted to see if pet preference in your region is similar to the state averages, which test would you conduct? Wilcoxon rank sum test Chi square test of independence Chi square goodness-of-it Wilcoxon matched-pairs signed ranks t test Question 20 2 / 2 pts The nonparametric equivalent to the One-way (between subjects / randomized) ANOVA is: Wilcoxon matched-pairs signed ranks t test Wilcoxon rank sum test Kruskal-Wallis test Friedman test Question 21 2 / 2 pts If parametric assumptions are violated for a study in which 30 participants are randomly assigned to one of three caffeine conditions (none, moderate, or high caffeine) before completing a memory task, which test is most appropriate? Kruskal-Wallis test Friedman test Wilcoxon rank sum test Wilcoxon matched-pairs signed ranks t test Question 22 2 / 2 pts The nonparametric equivalent to the correlated groups t-test is: Wilcoxon matched-pairs signed ranks t test Wilcoxon rank sum test Kruskal-Wallis test Friedman test Question 23 2 / 2 pts Imagine you wanted to examine dating site preferences to see if the category gender (male / female) influences the category variable of target age of dating match (younger, same age, or older). Calculate the degrees of freedom needed to look up the critical value. 2 3 4 5 Question 24 2 / 2 pts What test compares observed nominal data against what we would expect based on previous knowledge)? Wilcoxon rank sum test Chi square test of independence Chi square goodness-of-it Wilcoxon matched-pairs signed ranks t test Question 25 2 / 2 pts What type of test does not require the use of population parameters? ANOVA parametric nonparametric t-tests Question 26 2 / 2 pts The nonparametric equivalent to the One-way repeated measures ANOVA is: Wilcoxon matched-pairs signed ranks t test Wilcoxon rank sum test Kruskal-Wallis test Friedman test Quiz Score: 50 out of 50
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