Question

determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. ages (years) of children, such as 4, 5, 6, 7, and 8 choose the correct answer below. ordinal ratio interval nominal

Explanation:

• Nominal: Categories with no order (e.g., names of colors). Ages have a numerical order, so not nominal.
• Ordinal: Ordered categories but no equal intervals (e.g., rankings like "good", "better", "best"). Ages have equal intervals (1 - year difference between 4 and 5, 5 and 6, etc.), so not ordinal.
• Interval: Equal intervals but no true zero. Age has a true zero (0 years means no age).
• Ratio: Has equal intervals and a true zero. Age (in years) satisfies both. For example, an 8 - year - old is twice as old as a 4 - year - old (ratio property), and the difference between 5 and 6 is the same as between 6 and 7 (interval property), and 0 years is a valid starting point (true zero).

Answer:

Ratio