Inferential Statistics

Question 1

When is it appropriate to use a Mann Whitney U test ?

Answer 1

• when the design is independent groups
• If data is at least ordinal and when the hypothesis is predicting a difference

Question 2

When would it be appropriate to use a Signs test?

Answer 2

• when the design is repeated measures
• if the data is nominal and the hypothesis is predicting a difference

Question 3

When would it be appropriate to use a chi squared test?

Answer 3

• when the design is independent group
• if the data is at least nominal and when the hypothesis is predicting a difference

Question 4

When would it be appropriate to use a Wilcoxon test ?

Answer 4

• when the design is repeated measures
• if the level of data is at least ordinal and when the hypothesis is predicting a difference

Question 5

When would it be appropriate to use a spearman’s rho test?

Answer 5

• when the level of data is ordinal and the hypothesis is predicting a correlation/relationship

Question 6

What is a difference?

Answer 6

• changes in one variable brings about changes in others; cause and effect relationship present

Question 7

What is a correlation ?

Answer 7

• relationship between variable