Lecture 3

Question 1

What two ways can variables be classified?

Answer 1

Type of measurement and scale of measurement.

Question 2

What are the two types of measurement?

Answer 2

1 - Categorical e.g. sex

2 - Quantitative e.g. age

Question 3

What are the three scales of measurement? (explain)

Answer 3

1 - Nominal, where categories cannot be ranked on a numerical scale i.e. political party preference
2 - Ordinal,
3 - Interval and ratio