Choosing a statistical test

Question 1

What experimental designs and unrelated/related?

Answer 1

• IG : unrelated
• RM/MP : related

Question 2

What are the three types of data?

Answer 2

• Nominal
• Ordinal
• Interval

Question 3

What is nominal data?

Answer 3

• Data in the form of categories ‘categorical data’
• Is discrete (only 1 item can appear in 1 category)

Question 4

What is Ordinal data?

Answer 4

• Data is ordered in some way e.g a rating scale
• Does not have equal intervals between each unit e.g the value of an 8 is not double the value of a 4 in a rating scale.
• Subjective, lacks precision

Question 5

What is interval data?

Answer 5

• Based on numerical scales including units of equal and defined size
• scientific measurements e.g weight, time temperature
• necessary for parametric tests