How powerful are randomisation tests

Generally as powerful as parametric tests

What are the assumptions of a two sample randomisation test

Neither normal distribution nor homogeneity of variance

What does the significance value in a statistical test mean?

p(observed effect or something more extreme) if H0 is true

What is a null hypothesis distribution

A histogram of expected test-statistic values if H0 is true

What is the difference between a one tailed and two tailed test

A two-tailed test counts positive & negative test statistics

What is the test statistic in a randomisation test?

The difference between two means after random assignment

Which of these questions is suitable for a two-sample hypothesis test?

Do casinos with free drinks make more money than others?

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U24137 Randomisation Test

10 termsStudBud Administration151 plays

#psychology #statistics

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Questions 10

Answers

1
How powerful are randomisation tests
Generally as powerful as parametric tests
More powerful than other tests
Less powerful than other tests
Generally as powerful as non-parametric tests
2
What are the assumptions of a two sample randomisation test
Normal distribution plus homogeneity of variance
Normal distribution
Homogeneity of variance
Neither normal distribution nor homogeneity of variance
3
What represented the population in the randomisation task in the first U24137 lecture?
The dice
The outcome of the dice roll
The students
The test statistics
4
What is p if the test statistic reaches or exceeds the observed difference 20 out of 80 times?
p = .04
p = .25
p = 4.00
p = .025
5
What does the significance value in a statistical test mean?
The probability that the alternative hypothesis (H1) is true
p(observed effect) if H0 is true
p(observed effect or something more extreme) if H0 is true
The probability (p) that the null hypothesis (H0) is true
6
What is a null hypothesis distribution
A histogram of expected test-statistic values if H1 is false
A histogram of expected test-statistic values if H0 is false
A histogram of expected test-statistic values if H1 is true
A histogram of expected test-statistic values if H0 is true
7
What is the difference between a one tailed and two tailed test
In a two-tailed test the p value is halved
A two-tailed test counts positive & negative test statistics
In a two-tailed test the p value is doubled
A two-tailed test counts just negative test statistics
8
What is the test statistic in a randomisation test?
The difference between two population means
The difference between two means after random assignment
The difference between two observed means
The difference between two sample means
9
Which of these questions is suitable for a two-sample hypothesis test?
Do casinos with free drinks make money
Do some games earn casinos more money than others?
Did I make money the last time I visited a casino?
Do casinos with free drinks make more money than others?
10
What is the parametric equivalent of a two-sample randomisation test?
Wilcoxon test
Independent t-test
Paired t-test
Mann-Whitney U test

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