Which of the following is a quantitative data method that could be used to assess knowledge in a unit?

• A. Surveys
• B. Focus groups
• C. Interviews
• D. Observations

Answer: (A)

When you want to measure how much people in a unit know about a topic, you need a method that yields numbers you can summarize and compare. A survey does this by using structured items with fixed responses, such as multiple-choice or scaled ratings, so you can compute percent correct, average scores, and the distribution of knowledge levels. This approach scales to many personnel and lets you track changes over time or differences between groups, making it ideal for a quantitative assessment of knowledge.

The other methods collect qualitative information: focus groups and interviews explore people’s thoughts, beliefs, and experiences, while observations look at behaviors and events. These yield rich descriptive data rather than straightforward numeric knowledge metrics, and would require substantial coding to turn into comparable quantitative results.