Categorical Data represent distinct [[Categorization|categories]] (i.e. groups, or [[Enumeration|enum]]s). They are not additive - mathematical operators cannot be used on categorical data. # Types ## Nominal & Ordinal - **Nominal** - where data don't exist on a scale - e.g. eye color - "brown", "blue", "green" - **Ordinal** - where data exist on a scale - e.g. t-shirt size - "small", "medium", "large" ## Bound & Unbound - **Unbound** - aka "open-ended", where you can't present a complete list of all possible options, e.g. profession - **Bound** - where "other" isn't an option, e.g. days of the week - These are also called [[Enumeration|enum]]s in coding **** # More ## Source - grad school - Gemini ## Related