OKR and Metric Definition Questions

Covers translating strategic objectives into measurable key results and operational metrics that drive the right behaviors. Topics include writing clear objectives and specific, measurable key results, distinguishing leading and lagging indicators, defining primary metrics versus guardrail metrics, selecting absolute versus relative targets, avoiding perverse incentives, and ensuring metric hygiene through reliable instrumentation and data quality checks. Also addresses setting appropriate targets and time horizons, monitoring cadence, dashboard design and alerting for metric deviations, and using metrics to inform prioritization and continuous improvement without encouraging gaming.

MediumTechnical

0 practiced

Measure health of a two-sided marketplace. Propose a primary liquidity metric (or composite) and two guardrails to ensure quality and fairness. Explain why the chosen metric reflects the objective 'improve marketplace liquidity' and detail instrumentation and aggregation frequency (real-time vs daily).

MediumTechnical

0 practiced

Schema: users(user_id BIGINT, signup_date DATE); events(user_id BIGINT, event_date DATE, event_type TEXT). Write Postgres SQL to compute cohort-based retention for users who signed up in the past 180 days: produce columns cohort_week_start, cohort_size, retention_7d, retention_30d, retention_90d. Explain assumptions about last-touch attribution and missing event days.

HardSystem Design

0 practiced

Design an end-to-end experiment to test an OKR initiative to improve checkout completion: define the objective, primary KR, guardrails, experimental unit and randomization scheme, sample size and duration, monitoring dashboards, automated alerting for metric drift, early stopping rules, and rollout plan including rollback criteria.

MediumTechnical

0 practiced

Describe three practical methods to adjust targets and evaluate performance in the presence of seasonality: year-over-year comparison, seasonal decomposition (e.g., STL), and rolling baselines. For each method explain when it's appropriate, the formula or steps, and potential pitfalls when applied to business metrics.

EasyTechnical

0 practiced

You're given the Objective: 'Improve customer retention over the next quarter' for a SaaS product. Write three specific, measurable Key Results (KRs) that avoid ambiguity. For each KR include metric name, exact target, baseline, time window, and whether it is leading or lagging, plus one-sentence rationale.

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