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Data types (view source)

Revision as of 09:04, 13 December 2010

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==Qualitative data==

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Qualitative data ~~may be relatively subjectively defined~~, or are not ~~numerical in nature~~.

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Qualitative data are 'categorical' (or binary) data, and as such are often not expressed numerically. These types of data can be classified as '''nominal''' and '''ordinal''':

===Nominal===

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Nominal data include binary ('yes/no') and categorical data types, and are characterised by lacking any order between the different categories. As such, examples of nominal data are disease status (positive/negative), sex (male/female), breed and coat colour. As there is no numerical meaning to the data, nominal data are usually summarised with percentages or proportions.

===Ordinal===

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Ordinal data

==Quantitative data==

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