Measurement
There are four levels of measurement:
Nominal -
Ordinal -
Interval -
Ratio -
Cardinal Numbers
The interval scales and ratio scales are sometime classified together and called the Cardinal Scale
Also known as counting numbers because they indicate how many / size
1,2,3,4 50. 100
These can be used for ordering and ranking
Cardinal numbers can be divided into two groups:
Discrete - These are units where each value is clearly separated from its neighbour (eg 3 people)
Continous - These can be divided up again and again (eg 2 inches)
Examples - What type of measurement are these:
The salaries of people aged 30
The exam scores for a particular course
Number of exams passed
IQ scores
The size of famalies in the UK
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