Statistical tests

Question 1

When is the chi-squared test used?

Answer 1

EITHER:

• Nominal data
• Independent groups design
• Testing a difference
• Data in unrelated pairs.

OR:

• Nominal data
• Correlation
• Testing a relationship
• Data in related pairs

Question 2

When is the sign test used?

Answer 2

• Nominal data
• Repeated measures/matched pairs design
• Testing a difference
• Data in related pairs

Question 3

When is the Mann-Whitney U test used?

Answer 3

• Ordinal data
• Independent groups design
• Testing a difference
• Data in unrelated pairs.

Question 4

When is the Wilcoxon T test used?

Answer 4

• Ordinal data
• Repeated measures/matched pairs design
• Testing a difference
• Data in related pairs

Question 5

When is Spearman’s Rho used?

Answer 5

• Ordinal data
• Correlation
• Testing a relationship
• Data in related pairs

Question 6

When is the unrelated T test used?

Answer 6

• Interval/ratio data
• Independent groups design
• Testing a difference
• Data in unrelated pairs.

Question 7

When is the related T test used?

Answer 7

• Interval/ratio data
• Repeated measures/matched pairs design
• Testing a difference
• Data in related pairs

Question 8

When is Pearson’s R used?

Answer 8

• Interval/ratio data
• Correlation
• Testing a relationship
• Data in related pairs