Levels Of Measurement

Question 1

What are the 4 levels of measurement

Answer 1

Nominal
Ordinal
Interval
Ratio

Question 2

What is nominal data

Answer 2

The level of measurement that shows categories of data represented by frequencies, the data sets have no relative numerical value

eg. boys and girls/ tall, medium and short

Question 3

What is ordinal data

Answer 3

Data that can be placed into ascending or descending order, but interval between data are not necessarily equal

eg. the times for first, second and third in a race

Question 4

What is interval data

Answer 4

The level of measurement that has equal numerical intervals between scores

eg. temperature the interval between 1 and 2 degrees is the same as 20 and 21 degrees

Question 5

What is ratio data

Answer 5

The level of measurement that has equal intervals between scores and has an absolute or true zero point

eg. speed (mph)

Question 6

What is an advantage and a disadvantage of all of the levels of measurement

Answer 6

+ it is quantitative data that can be used to analyse and compare to detect patterns and trends
- it is descriptive and doesn’t give detail or explanation as to why the data is the way it is