levels of measurement

Question 1

nominal

Answer 1

data represented in the form of categories
e.g. number of students that drive, walk, bike etc
discrete - one time can only appear in one category

Question 2

ordinal

Answer 2

data which is ordered in some way
e.g. rating the 6th form on a scale of 1-10
does not have equal intervals between each unit
lacks precision - based on subjective opinion
can be referred to as ‘unsafe’ - turned into ranks then statistical test is done

Question 3

interval/ratio

Answer 3

based on numerical scales that include units of equal precisely defined size
units of measurements for height, time, temp etc
can be discrete or continuous

Question 4

discrete

Answer 4

• units of measurement cannot be split up
• exact measurements only
• shoe size, rolls of dice etc

Question 5

continuous

Answer 5

• measured using a scale of measurement
• height, distance etc