QMO - Worksheet Tutorial 2

Question 1

Give examples for the following levels of measurements: nominal, ordinal, interval and ratio

Answer 1

Nominal: Gender (categorize)
Ordinal: Likert scale (categorize and rank)
Interval: Test scores (categorize, rank, and equal intervals)
Ratio: Height (categorize, rank, equal interval, and true zero point)

Question 2

What is dummy coding?

Answer 2

Giving a 1 or a 0 to a variable (for example male = 1 female = 0)

Question 3

What are the advantages of multi-item scale?

Answer 3

1) Less variables
2) More reliability