Understand and resolve data accuracy problems including duplicate visitors, incorrect locations, and missing analytics data.
Common Data Issues
Duplicate Visitors
Causes and solutions for visitor duplication:
- Multiple tracking codes: Remove duplicate installations
- Single-page apps: Implement proper SPA tracking
- Cross-domain tracking: Configure domain linking
- Browser sessions: Check session timeout settings
Incorrect Geographic Data
Location accuracy improvements:
- IP geolocation has natural limitations
- VPN and proxy usage affects accuracy
- Corporate networks may show office locations
- Mobile data can be less precise
Missing Data
Investigate missing analytics data:
- Check date range and timezone settings
- Verify tracking code implementation
- Review ad blocker impact
- Check for sampling in high-traffic sites
Data Validation
Validate your analytics data:
- Compare with server logs
- Cross-reference with other analytics tools
- Monitor data consistency over time
- Set up data quality alerts
Best Practices
Maintain data accuracy:
- Regular tracking code audits
- Consistent implementation across pages
- Proper event tracking setup
- Regular data quality reviews