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Questions and Answers

What assumptions do parametric tests have?

Data is not significantly different from the normal distribution and there is homogeneity of variance between both groups. (correct)

Data not significantly different from the normal distribution and there is no homogeneity of variance between both groups.

Data is significantly different from the normal distribution and there is homogeneity of variance between both groups.

Data is significantly different from the normal distribution and there is no homogeneity of variance between both groups.

Comparing parametric tests to non parametric tests, parametric tests are...

Less powerful and less flexible

Less powerful but more flexible

More powerful and more flexible (correct)

More powerful and less flexible

Chi squared uses...

Unrelated data (correct)

Unrelated and related data

related data

none of the above

Chi squared test is focused on...

The proportions of population (e.g. gender bias in the psychology department). Signup and view all the answers

What data do Chi squared tests use?

Nominal Signup and view all the answers

The Chi squared test is a type of...

Non - parametric test Signup and view all the answers

What to T tests look for?

Differences Signup and view all the answers

T - tests meet parametric assumptions

Yes Signup and view all the answers

Which central of tendency does the T - test relate the differences to the distribution of a sample?

Mean Signup and view all the answers

If there is no difference between both groups (null hypothesis is true) what would the average difference be (from lots of comparisons made between both groups)?

0 Signup and view all the answers

What does the Wilixon - signed rank test compare the median between?

Sample to a population Signup and view all the answers

What p value determines a significant difference in Wilixon signed rank test?

P < 0.05 Signup and view all the answers

What p value determines the data being non significantly different from the normal distribution?

p>0.05 Signup and view all the answers

What p value indicates that there is homogeneity between both samples (variance between both samples are not significantly different)?

p>0.05 Signup and view all the answers

How do you work out the expected frequency?

Proportion x sample size Signup and view all the answers

What does p > 0.05 for unrelated t test and Mann Whitney test indicate?

No significant difference Signup and view all the answers

Wilixon signed rank test is a parametric test.

False Signup and view all the answers

What data does the Mann Whitney test use?

Ordinal Signup and view all the answers

What data is used in parametric tests?

Interval/ratio Signup and view all the answers