Defend an Experiment Decision and Its Incremental Impact
Last updated: August 14, 2026
Quick Overview
The candidate is asked to defend a decision made during an experiment, focusing on its incremental impact and the reasoning behind it.
Amazon
August 14, 20262
0
23 solved
The candidate is asked to defend a decision made during an experiment, focusing on its incremental impact and the reasoning behind it.
This question is commonly asked in technical screens for Business Intelligence Engineer roles at Amazon. The interviewer is looking to assess the candidate's critical thinking skills, understanding of experimental design, and ability to articulate the impact of their decisions. The candidate's response should reflect their experience with A/B testing and their capacity to analyze results and trade-offs.
What the Interviewer Expects
- Clearly explain the experiment's objective and design.
- Discuss the incremental impact of the experiment on key metrics.
- Describe any trade-offs made and the rationale behind them.
- Mention collaboration with other teams and stakeholders.
- Provide specific examples or data to support the decision.
Key Topics to Cover
How to Approach This
- Use the STAR method: Situation, Task, Action, Result.
- Be specific about YOUR actions, not just the team outcome.
- Quantify your impact whenever possible (e.g., "reduced latency by 40%").
- Prepare stories for: conflict, failure, ambiguity, leadership, and technical trade-offs.
- Show growth mindset. Explain what you learned and how you changed your approach.
Possible Follow-up Questions
- Can you describe a situation where the experiment did not go as planned?
- How do you prioritize experiments when resources are limited?
- What metrics do you consider most important when evaluating an experiment?
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