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==Qualitative data==
==Qualitative data==
Qualitative data may be relatively subjectively defined, or are not numerical in nature.
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===
===Nominal===
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===
===Ordinal===
Ordinal data
==Quantitative data==
==Quantitative data==