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Q 1/7
Score 0
You are a researcher at the RUG, and you want to measure the stress levels of students when they are taking an exam. So you take a fixed group of 20 students and measure their stress level during an exam and afterwards. The data you obtained were not normally distributed. Which test should you use to compare during and after the exam?
300
Wilcoxon rank-sum test
Mann-Whitney U test
Wilcoxon signed-rank test
Paired sample t-test
Q 2/7
Score 0
When should you use a non-parametric test?
300
The number of observations is too small to assess normality adequately.
The distribution of only one variable is not normal.
Both
7 questions
Q.
You are a researcher at the RUG, and you want to measure the stress levels of students when they are taking an exam. So you take a fixed group of 20 students and measure their stress level during an exam and afterwards. The data you obtained were not normally distributed. Which test should you use to compare during and after the exam?
1
300 sec
Q.
When should you use a non-parametric test?
2
300 sec
Q.
What do non-parametric tests measure?
3
300 sec
Q.
How do non-parametric tests work in essence?
4
300 sec
Q.
What is the non-parametric equivalent of an anova?
5
300 sec
Q.
What is the R command to perform a Wilcoxon signed-rank test?
6
300 sec
Q.
Select the true advantage of non-parametric tests.
