1. The problem involves understanding the four scales of measurement: Ratio Scale, Interval Scale, Ordinal Scale, and Nominal Scale. 2. These scales are used in statistics and research to categorize and measure variables. 3. The Nominal Scale classifies data into distinct categories without any order. For example, colors or types of animals. 4. The Ordinal Scale categorizes data with a meaningful order but without consistent differences between categories. For example, rankings or satisfaction levels. 5. The Interval Scale has ordered categories with equal intervals between values but no true zero point. For example, temperature in Celsius or Fahrenheit. 6. The Ratio Scale has all the properties of the interval scale, plus a true zero point, allowing for meaningful ratios. For example, height, weight, or time. 7. Understanding these scales helps in choosing appropriate statistical methods and interpreting data correctly. Final answer: The four scales of measurement are Nominal, Ordinal, Interval, and Ratio, each with increasing levels of measurement precision and mathematical properties.