The nominal scale is often called qualitative scales. This type is used for distinguishing between items or subjects based only on their names or categories and other qualitative classifications they belong to; thus, the different data involves the construction of classifications as well as the classification of items. Numbers may be used to represent the variables but the numbers do not have numerical value or relationship. For example: In grammar, the parts of speech: noun, verb, preposition, article, pronoun, etc
