Quality control is the foundation of data credibility. Here is why 30% Independent QC is the gold standard.
What Is Independent QC?
A separate team re-verifies data, eliminating self-review bias.
Why 30%?
- 5%: Misses systematic fraud.
- 15%: OK for low-risk projects.
- 30%: Gold standard, catches errors AND fraud.
In Practice
- 100% audio recording
- 30% respondent callback verification
- GPS location audit
- Statistical outlier detection
30% Independent QC is an insurance policy for data integrity.