What is spatial data quality and why does it matter for analysis?

• A. Only the color of the map matters for quality.
• B. Quality is determined solely by map scale.
• C. Data accuracy, precision, completeness, and timeliness; poor quality leads to incorrect conclusions.
• D. Quality is irrelevant to spatial analysis.

Answer: (C)

Spatial data quality is about how well geographic data fit the task at hand. It includes accuracy (how close locations and attributes are to reality), precision (the level of detail), completeness (whether all needed features and attributes are present), and timeliness (how up-to-date the data are). These aspects matter because they determine how trustworthy analysis results are. If accuracy is poor, measurements of distance or area can be wrong; if data are incomplete, you might miss important patterns; if the data are outdated, conclusions may no longer reflect current conditions. In short, high-quality spatial data lead to reliable conclusions, while poor quality can push analysis toward incorrect interpretations. The other statements miss the point: color is about visualization, not data quality; map scale affects generalization but doesn’t define data quality in full; and quality is essential for meaningful analysis.