18166727
Descrição
Quiz por Katie Morbey, atualizado more than 1 year ago
|
Criado por Katie Morbey
mais de 5 anos atrás
|
|
Questão 1
Questão
Assuming the data meet the assumptions of parametric tests, non-parametric tests, compared to their parametric counterparts ___________
Responda
-
Have less statistical power
-
All of the above
-
Are less likely to accept the alternative hypothesis
-
Are more conservative
Questão 2
Questão
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?
Responda
-
Mann-Whitney test
-
Kruskal-Wallis test
-
Friedman test
-
Wilcoxon test
Questão 3
Questão
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?
Responda
-
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
Questão 4
Questão
An advantage of non-parametric statistics is that _________
Responda
-
You need a computer to calculate them
-
They are very powerful
-
They have many assumptions to meet
-
They are easy to calculate
Questão 5
Questão
Which of the following tests is analogous to a standard within-subjects ANOVA?
Responda
-
Wilcoxon
-
Kruskal-Wallis
-
Friedman
-
Mann-Whitney
Questão 6
Questão
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 ____________
Responda
-
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
Questão 7
Questão
A dataset contains the following values: 23, 28, 37, 23, 45, 49, 37, 62. Rank the values. Which rank is associated with value 37?
Responda
-
4.5
-
6
-
3.5
-
4
Questão 8
Questão
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?
Responda
-
Mann-Whitney
-
Wilcoxon
-
Friedman
-
Kruskal-Wallis
Questão 9
Questão
n a Kruskal-Wallis test, the _________ the value of H, the more likely you are to reject the null hypothesis
Responda
-
More negative
-
Smaller
-
H is not relevant for the Kruskal-Wallis test
-
Larger
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.