nominal scale

A nominal scale is a way of categorizing data by named groups or labels that do not have a specific order or ranking. For example, types of fruit (apples, bananas, oranges) or colors (red, blue, green) are nominal. These labels help organize data but don't imply one category is better or higher than another. The key feature is that data points are distinguished by categories only, without any quantitative value or hierarchy. This scale is useful for grouping and identifying differences among items based on qualities rather than quantities.