
Chapter 4 - EST3
Authored by Catarina Neves
Mathematics
University
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The Kruskal-Wallis test is:
An extension of the Wilcoxon test for more than 2 populations
An extension of the Mann-Whitney test for more than 2 populations
An extension of the quantile test for more than 2 populations
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Four friends compared the minutes they spent studying per course, in a day. They want to test if any of them tends to spend more time studying than at least one of the others. The registered minutes per course are in the following table. What test should they use?
Friedman test
Kruskall-Wallis test
Wilcoxon
Mann-Whitney
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the Friedman test, the blocks are the populations under test.
True
False
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In the Kruskall-Wallis test, the measurement scales need to be at least ordinal.
True
False
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If we reject H0 in Friedman test, we can make multiple comparisons to test which populations are different from each other
True
False
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Two friends registered the number of minutes they spent on Netflix per day (consider this as a random sample per friend). The data is shown below. We want to test if one of them tends to spend more time than the other. Which test should be used?
Friedman test
Kruskal wallis
Mann-Whitney
Wilcoxon
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