Contingency tables Flashcards
1
Q
What is a chi square goodness of fit used for?
A
Comparing observed counts with theoretical distribution
2
Q
Is a Chi-square an exact test?
A
No
Fishers is exact, this is approximate
3
Q
What is a chi-square test of independence used for?
A
Examine if there is an association between two variables
4
Q
How is the null hypothesis shown in the chi square test of independence?
A
Proportions between rows do not depend on the column
5
Q
What are G-tests based on?
A
Likelihood ratio
6
Q
What is a G-test used for?
A
Examine the association between two variables
7
Q
G tests are similar to….
A
Chi squares
For large numbers
8
Q
What is McNemar’s test for?
A
Paired data
Like before and after data on the same subject
9
Q
What kind of data is used for a Chi-square goodness of fit?
A
Catgorical data
