Steps in selecting the most appropriate statistical test

Question 1

What is the 3 criteria you need to workout to suggest why the test you have elected is appropriate?

Answer 1

1. Is it a test of difference(between two variables) or association/ correlation(what is the relationship?)
2. Which experimental design has been used? (repeated measures etc)
3. Which level of measurement is it? (Nominal etc)

Question 2

Which test do you use if its a repeated measures design with a nominal level of measurement?

Answer 2

Sign Test

Question 3

Which test do you use if its a repeated measures design with an ordinal level of measurement?

Answer 3

Wilcoxon

Question 4

Which test do you use if its a repeated measures design with an interval level of measurement?

Answer 4

Related t-test

Question 5

Which test do you use if it’s an independent groups design with a nominal level of measurement?

Answer 5

Chi squared

Question 6

Which test do you use if it’s an independent groups design with an ordinal level of measurement?

Answer 6

Mann Whitney U

Question 7

Which test do you use if it’s an independent groups design with an interval level of measurement?

Answer 7

Unrelated t-test

Question 8

Which test do you use if it’s a correlation design with a nominal level of measurement?

Answer 8

Chi squared

Question 9

Which test do you use if it’s a correlation design with an ordinal level of measurement?

Answer 9

Spearman’s Rho

Question 10

Which test do you use if it’s a correlation design with an interval level of measurement?

Answer 10

Pearson’s r