The proportion of a population with a dimension at or below a given value is described by which concept?

• A. Nominal data scale
• B. Percentile range
• C. Interval data
• D. Ordinal data

Answer: (B)

The main idea is describing where a value falls in the distribution in terms of how much of the population lies at or below that value. This is captured by percentiles: a percentile tells you the proportion of observations that are at or below a given threshold. For example, the 60th percentile means 60% of people have values at or below that point. This concept focuses on position within the distribution, not on what type of data you have. Nominal data are just categories with no order, ordinal data have order but unequal intervals, and interval data have equal intervals but no true zero. So describing the proportion below a value is a percentile-based idea, hence the correct choice.