Analytical errors and model bias
Operational Before 16 After 6Coding mistakes, wrong weights, leaky variables or a model trained on unrepresentative data produce findings that look precise but mislead the business.
Who or what is affected: Marketing leaders, product teams and customers affected by decisions
Causes
Time pressure, complex models and limited documentation of analytical choices.
Consequences
Wrong launches, wasted budget and loss of trust in the insights function.
Existing controls
- Analysts peer review code before results are shared.
- Key findings are checked against a second dataset once a quarter.
Control gaps
Model assumptions are rarely tested against new data after launch.
Additional controls
- Prevent: Use a standard checklist for weighting, outliers and model validation before release.
- Detect: Run back tests and compare model output with holdout results each cycle.