PSYC515 QUIZ 5 - NON-PARAMETRIC TESTS CONCEPTS

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Liberty University *

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PSYC 515

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Statistics

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Feb 20, 2024

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docx

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Uploaded by ConstableTitaniumPrairieDog15

Instructions The quiz:  Covers the Learn material from Module 5: Week 5 .  Contains 25 multiple-choice questions .  Is limited to 90 minutes .  Allows 1 attempt .  Is worth 50 points . This quiz is designed to assess understanding of content from this week’s topics covered in the Learn section (non-cumulative) and will not require use of SPSS. You have 90 minutes to complete these 25 questions. This allows for judicious use of time to refer to assigned readings and presentations (open book / open notes), but should be completed with no other forms of collaboration. Please note: that the first question asks you to indicate your agreement to abide by LUO's Online Honor Code. Answering this question is required . Submit this assignment by 11:59 p.m. (ET) on Sunday of Module 5: Week 5. Attempt History Attempt Time Score LATEST Attempt 1 23 minutes 40 out of 50 Correct answers are hidden. Score for this quiz: 40 out of 50 This attempt took 23 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 Incorrect Question 2

0 / 2 pts Nonparametric is to parametric as _____ is to _____. t test; z test – WRONG z test; t test χ 2 test; t test t test; χ 2 test Answer is found in the Jackson textbook, ch. 14 Incorrect Question 3 0 / 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. – WRONG The underlying distribution is not normal. The observations are independent. There is homogeneity of variance. Answer is found in the Jackson textbook, ch. 14 Question 4 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 5 2 / 2 pts Chi-square tests are to _____ data as Wilcoxon tests are to _____ data. ordinal; interval nominal; ordinal ordinal; nominal ratio, ordinal Question 6 2 / 2 pts When using the Wilcoxon tests, the obtained value must be ______ the critical value in order to establish statistical significance. less than or equal to

greater than or equal to greater than equal to Question 7 2 / 2 pts The calculation of the df for the χ 2 test of independence is r x c - 1. (r-1)(c-1). (r-c) n . r x c. Question 8 2 / 2 pts Which of the following is true regarding the χ 2 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 9 2 / 2 pts The nonparametric equivalent to the one-way repeated measures ANOVA is the _____ test. Chi-square t Friedman test Kruskal-Wallis Question 10 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 χ 2 test for independence χ 2 goodness-of-fit test Question 11 2 / 2 pts

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