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Quiz

Week 10

Gelöschter Nutzer 9 Fragen Aktualisiert am 19 Mai 2019

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Fragen in diesem Quiz (9)

  1. 1Assuming the data meet the assumptions of parametric tests, non-parametric tests, compared to their parametric counterparts ___________
    1. AHave less statistical power
    2. BAll of the above
    3. CAre less likely to accept the alternative hypothesis
    4. DAre more conservative
  2. 2A researcher measured leadership skills in police officers, doctors, and accountants. The data were skewed. What is the most appropriate test to analyse the data?
    1. AMann-Whitney test
    2. BKruskal-Wallis test
    3. CFriedman test
    4. DWilcoxon test
  3. 3The results of the test used to analyse the data described in Question 2 showed a significant result. How should the researcher carry out post-hoc tests?
    1. ACompare groups using the Mann Whitney test
    2. BCompare groups using the Wilcoxon test
    3. CCompare groups using a t-test
    4. DNone of the above. Post-hoc analyses cannot be carried out with non-parametric data
  4. 4An advantage of non-parametric statistics is that _________
    1. AYou need a computer to calculate them
    2. BThey are very powerful
    3. CThey have many assumptions to meet
    4. DThey are easy to calculate
  5. 5Which of the following tests is analogous to a standard within-subjects ANOVA?
    1. AWilcoxon
    2. BKruskal-Wallis
    3. CFriedman
    4. DMann-Whitney
  6. 6Tied scores (when two or more scores have the same value) may present a problem in non-parametric tests. The way to deal with them in a Kruskal-Wallis test is to ____________
    1. AAssign any tied values the lower of the ranks they would have received had they not been tied
    2. BUse a random number table to assign ranks to the tied values
    3. CThrow out the tied data
    4. DAssign any tied values the average of the ranks they would have received had they not been tied
  7. 7A dataset contains the following values: 23, 28, 37, 23, 45, 49, 37, 62. Rank the values. Which rank is associated with value 37?
    1. A4.5
    2. B6
    3. C3.5
    4. D4
  8. 8Researchers wanted to examine whether the ‘see-food’ diet was effective. A group of volunteers were placed on the diet and their weight (in kilograms) was measured at the beginning of the diet, after 1 month, after 2 months, then at the end of the diet after 3 months. The data were not normally distributed. Which test would be appropriate to analyse this data?
    1. AMann-Whitney
    2. BWilcoxon
    3. CFriedman
    4. DKruskal-Wallis
  9. 9n a Kruskal-Wallis test, the _________ the value of H, the more likely you are to reject the null hypothesis
    1. AMore negative
    2. BSmaller
    3. CH is not relevant for the Kruskal-Wallis test
    4. DLarger

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Beschreibung
Der Nutzer hat seine Fachbereichs-Information gelöscht. Quiz am Week 10, erstellt von Gelöschter Nutzer am 19/05/2019.
Autor
Gelöschter Nutzer
Sprache
English
Aufrufe
19
Verlauf
Erstellt am 19 Mai 2019 · aktualisiert am 19 Mai 2019

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