Which statement about nominal data is true?

Which statement about nominal data is true?

• A. It consists of categories with no natural order
• B. It has a true zero point
• C. It has equal intervals
• D. It has ordered categories

Answer: (A)

Nominal data label observations with categories that have no natural order. In this type of data, categories are simply names you can count, like colors or brands, and there isn’t a ranking or sequence among them. Because there’s no inherent order or numeric meaning to the categories, you can’t say one category is greater or less than another, and you can’t meaningfully talk about distances between categories. You typically summarize nominal data by counting how many observations fall into each category and by identifying the most frequent category (the mode). This contrasts with other data types: having a true zero point is a feature of ratio data, equal intervals relate to interval data, and ordered categories describe ordinal data where a ranking exists but intervals may not be equal.

Nominal data label observations with categories that have no natural order. In this type of data, categories are simply names you can count, like colors or brands, and there isn’t a ranking or sequence among them. Because there’s no inherent order or numeric meaning to the categories, you can’t say one category is greater or less than another, and you can’t meaningfully talk about distances between categories. You typically summarize nominal data by counting how many observations fall into each category and by identifying the most frequent category (the mode). This contrasts with other data types: having a true zero point is a feature of ratio data, equal intervals relate to interval data, and ordered categories describe ordinal data where a ranking exists but intervals may not be equal.