research methods- levels of measurement Flashcards
Nominal level of measurement
The level of measurement that shows
categories of data represented by
frequencies. The data sets have no
relative numerical value
Ordinal Level of measurement
The level of measurement where
data can be placed into ascending or
descending order, but the intervals
between data are not necessarily equal,
Interval level of measurement
where data can be measured via discrete intervals
Time can be measured in intervals
This type of measurement does not contain a true ‘zero’
Ratio level of measurement
The level of measurement that has equal
intervals between scores and has an
absolute or true zero point
difference between each level
Nominal data is the least sophisticated; it just gives us a very basic picture
Ordinal is more complex than nominal, but it still has no relative mathematical value,
Interval data goes one step further in terms of sophistication – the number
now means something mathematically and can be compared as such.
Finally, ratio is the ‘elite’ of the data world – it is a form of data that is both interval
and has a true zero point. It gives us the most complex picture of all levels of
measurement.