what is nominal scale

Nominal scale is a type of measurement scale used in statistics, where numbers serve as "tags" or "labels" only to identify or classify an object. Nominal scale is qualitative in nature, which means numbers are used here only to identify the objects. Nominal scale possesses only the description characteristic, which means it possesses unique labels to identify or delegate values to the items. Nominal scale is used for labeling variables without any quantitative value. Nominal scale is divided into two or more categories, for example, agree/disagree, yes or no, etc. . Nominal scale is the least detailed level of measurement and has no natural order. Nominal scale is used to define groups in data that you want to compare, such as the experimental conditions of the treatment and control groups.