CompTIA Data+ (DA0-001) — Question 272

Which of the following will always result in a null value when aggregate operations are applied?

Answer options

• A. Sum collection
• B. Data collection
• C. Average collection
• D. Empty collection

Correct answer: D

Explanation

The correct answer is D, as an Empty collection has no elements to aggregate, leading to a null result. In contrast, Sum, Data, and Average collections contain data, which allows for aggregate operations to produce meaningful results.