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Metricsstandard
Define success metrics for a video calling app's new noise cancellation feature.
How to approach it
Combine technical quality and user perception. Noise cancellation that measures well but cuts off voices will fail.
How a strong answer opens
“I'd combine technical quality with how people perceive the call. Noise cancellation that measures well but clips voices would still fail.”
Outline of a strong answer
Try answering out loud for a few minutes before you open this.
- Adoption: share of calls with it on
- Quality: background noise level, voice clarity scores
- Perception: call quality ratings
- Outcome: fewer dropped or repeated calls
- Guardrails: CPU use, battery drain, voice cut-offs
- Pick a headline metric
Where this question usually goes wrong
Relying on lab audio scores alone and missing voice cut-offs, battery drain or users quietly switching the feature off.
Learn the method
Metric trees: breaking a goal into parts in Module 2, Metrics and execution.
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