Sample interview questions: Can you explain how you would assess the accuracy and reliability of GIS results?
Sample answer:
Accuracy Assessment
- Reference data comparison: Compare GIS results to high-quality reference data (e.g., aerial imagery, field surveys) to determine the degree of correspondence.
- Statistical error analysis: Use statistical methods (e.g., root mean square error, mean absolute error) to quantify the deviation between GIS results and reference data.
- Spatial autocorrelation analysis: Assess the spatial distribution of errors to identify areas with potentially higher or lower accuracy.
Reliability Assessment
- Source data evaluation: Examine the quality, completeness, and currency of the data used to generate GIS results.
- Methodology review: Document and validate the analytical methods and assumptions used in the GIS analysis.
- Sensitivity analysis: Conduct sensitivity tests to determine the impact … Read full answer
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