Prove API Latency Affects User Engagement
This tests your ability to design a controlled experiment for a backend attribute. A great answer outlines an A/B test that artificially adds latency for a treatment group, details the necessary logging with shared IDs, and explains how to join and analyze…
This question tests your ability to design a controlled experiment for a backend attribute and connect it to user-facing metrics. A strong answer will propose an A/B test where a treatment group experiences artificially induced latency, detail the required instrumentation with a common ID across performance logs and analytics events, and explain how to analyze results for statistical significance. A major red flag is proposing a purely correlational study instead of a controlled experiment.
Read the original → optimizely.com
- #systems design
- #analytics
- #metrics
- #a/b testing
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