Levels of measurement

Question 1

Level of measurement

Nominal data

Answer 1

The level of measurement that shows categories of data represented by frequencies. The data sets have no relative numerical value e.g. boys and girls.

Question 2

Level of measurement

Ordinal

Answer 2

The level of measurement where
data can be placed into ascending or
descending order, but the intervals
between data are not necessarily equal, e.g. the times for first, second and third in a race.

Question 3

Level of measurement

Interval data

Answer 3

The level of measurement that has equal numerical intervals between scores, e.g. temperature. The interval between 1 and 2 degrees is the same as between 21 and 22 degrees.

Question 4

Level of measurement

Ratio data

Answer 4

The level of measurement that has equal intervals between scores and has an absolute or true zero point, e.g. speed (mph).