Categorical Data

Question 1

1 group - to test for proportions

Answer 1

Z test

Question 2

2 groups - to test that 2 proportions are equal

Paired

Answer 2

McNemar’s test

Question 3

2 groups - to test that 2 proportions are equal
Independent
Expected frequency > 5

Answer 3

Chi-Squared test

Question 4

2 groups - to test that 2 proportions are equal
Independent
Expected frequency < 5

Answer 4

Fischer’s Exact test

Question 5

2+ groups - to test that 2 proportions are equal
Independent
Expected frequency =/>5 in 80% of cells or more

Answer 5

Chi-Squared test

Question 6

2+ groups - to test that 2 proportions are equal
Independent
Expected frequency <5 in 20% of cells or more

Answer 6

Fischer’s Exact test

Question 7

2+ groups - to test for a trend across categories
Independent
Expected frequency =/>5 in 20% of cells or more

Answer 7

Chi-Squared test for trend

Linear-by-linear association test