Πηγές δεδομένων
CourseHub aggregates data from multiple sources to compute ROI scores. This page documents each source.
| Source |
Coverage |
Update Frequency |
| Coursera public catalog |
All listed courses |
Weekly |
| Udemy API |
Top-rated courses |
Weekly |
| edX API |
All listed courses |
Weekly |
| Pluralsight catalog |
All listed courses |
Weekly |
| DataCamp course list |
All listed courses |
Weekly |
Completion Rate
| Source |
Method |
Confidence |
| Platform-published statistics |
Direct from MOOC reports |
High |
| Industry research papers |
Academic studies on MOOC completion |
Medium |
| CourseHub estimation |
Based on course difficulty, length, price |
Low |
Salary Lift
| Source |
Coverage |
Update Frequency |
| LinkedIn Salary |
US job market |
Monthly |
| Levels.fyi |
Tech industry |
Monthly |
| Glassdoor |
Cross-industry |
Monthly |
| BLS OES |
US Bureau of Labor Statistics |
Annual |
| CourseHub estimation |
Category average for missing data |
Quarterly |
Pricing
| Source |
Notes |
| Platform list price |
Captured weekly |
| Promotional pricing |
Not included (uses list price) |
| Subscription pricing |
Normalized to per-course equivalent |
Course Duration
- Estimated from syllabus and module count
- Cross-referenced with platform-stated duration
- Includes video lectures, readings, assignments, and projects
Confidence Assignment
- High: Direct platform data + verified salary data + recent update (< 90 days)
- Medium: Estimated data + verified salary data OR direct data + estimated salary
- Low: Multiple estimated parameters or stale data (> 180 days)
See Also
