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PostGIS / SQLadvancedDifficulty: advanced+195 bonus XP
Which neighborhoods merit a service follow-up?
A city service manager wants to compare where their one-week sewer-request cohort generated a larger review queue. Raw counts mostly repeat where more people report. A percentage is more comparable, but a neighborhood with a single report can show 100% by chance. Produce a map for areas with enough reports to support a first-pass conversation.
Solve today's challenge390 base XP · ~65 min
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