Data Interpretation: Data Combination

Concept Explanation

Data combination merges information from two or more small datasets (tables, caselets, or charts) to answer one question.

How to Read

• List facts from each source with labels.
• Find the link (same product, same year, same total).
• Combine only after units and bases match.

Example

Table 1: Product A = 200. Table 2: Product B = 300. Combined sales = 500.

Common Trap

Do not double-count items that appear in both sources unless the question asks for union with overlap.