- Qualitative data
The term qualitative is used to describe certain types of
information. Qualitative dataare described in terms of quality(that is, 'informal' or relative characteristics such as warmth and flavour). This is the converse of " quantitative", which more precisely describes data in terms of quantity(that is, using formal numerical measurement).
Quantitative data falls into two broad categories: Discrete (or attribute) data and Continuous (or variable) data. Discrete data generally falls into three categories: Category data (eg. car type), Bi-nomial data (eg. pass/fail), and Count / Poisson data (eg. # of hairs on your head).
It is possible to approximate quantitative data from qualitative data - for instance, asking people to rate their perception of a sensation on a
A "quantitative" way to report room temperature would be "the temperature in this room is 23 degrees
A "qualitative" way to report room temperature would be to say "this room is comfortably warm," or "this room is warmer than it is outside".
A "quantitative" way to describe the tree would be to say "The tree is 30 feet tall."
A "qualitative" way to describe a tree would be to say "the tree is taller than the building."
Level of measurement
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