Which statement about quantitative data is true?

• A. It cannot be decimal
• B. It is qualitative in nature
• C. It is used for statistical analysis
• D. It is not measurable

Answer: (C)

Quantitative data are numerical measurements that can be counted or measured, allowing you to perform statistical analysis. Because these values can be averaged, varied, and examined for relationships, they form the basis for many statistical methods used to understand safety trends, such as average speeds, crash counts, or time between incidents. That makes the statement that quantitative data is used for statistical analysis the true one.

The other statements don’t fit: numbers can be decimals, so it’s not true that quantitative data cannot be decimal. Qualitative data describe qualities or categories rather than numbers, so quantitative data are not qualitative in nature. And since quantitative data are numerical measurements, they are by definition measurable.