Week 10

Beschreibung

Psychology Quiz am Week 10, erstellt von Katie Morbey am 19/05/2019.
Katie Morbey
Quiz von Katie Morbey, aktualisiert more than 1 year ago
Katie Morbey
Erstellt von Katie Morbey vor mehr als 5 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
Assuming the data meet the assumptions of parametric tests, non-parametric tests, compared to their parametric counterparts ___________
Antworten
  • Have less statistical power
  • All of the above
  • Are less likely to accept the alternative hypothesis
  • Are more conservative

Frage 2

Frage
A researcher measured leadership skills in police officers, doctors, and accountants. The data were skewed. What is the most appropriate test to analyse the data?
Antworten
  • Mann-Whitney test
  • Kruskal-Wallis test
  • Friedman test
  • Wilcoxon test

Frage 3

Frage
The 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?
Antworten
  • Compare groups using the Mann Whitney test
  • Compare groups using the Wilcoxon test
  • Compare groups using a t-test
  • None of the above. Post-hoc analyses cannot be carried out with non-parametric data

Frage 4

Frage
An advantage of non-parametric statistics is that _________
Antworten
  • You need a computer to calculate them
  • They are very powerful
  • They have many assumptions to meet
  • They are easy to calculate

Frage 5

Frage
Which of the following tests is analogous to a standard within-subjects ANOVA?
Antworten
  • Wilcoxon
  • Kruskal-Wallis
  • Friedman
  • Mann-Whitney

Frage 6

Frage
Tied 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 ____________
Antworten
  • Assign any tied values the lower of the ranks they would have received had they not been tied
  • Use a random number table to assign ranks to the tied values
  • Throw out the tied data
  • Assign any tied values the average of the ranks they would have received had they not been tied

Frage 7

Frage
A dataset contains the following values: 23, 28, 37, 23, 45, 49, 37, 62. Rank the values. Which rank is associated with value 37?
Antworten
  • 4.5
  • 6
  • 3.5
  • 4

Frage 8

Frage
Researchers 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?
Antworten
  • Mann-Whitney
  • Wilcoxon
  • Friedman
  • Kruskal-Wallis

Frage 9

Frage
n a Kruskal-Wallis test, the _________ the value of H, the more likely you are to reject the null hypothesis
Antworten
  • More negative
  • Smaller
  • H is not relevant for the Kruskal-Wallis test
  • Larger
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