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Data Driven Recommendations and Impact Questions

Covers the end to end practice of using quantitative and qualitative evidence to identify opportunities, form actionable recommendations, and measure business impact. Topics include problem framing, identifying and instrumenting relevant metrics and key performance indicators, measurement design and diagnostics, experiment design such as A B tests and pilots, and basic causal inference considerations including distinguishing correlation from causation and handling limited or noisy data. Candidates should be able to translate analysis into clear recommendations by quantifying expected impacts and costs, stating key assumptions, presenting trade offs between alternatives, defining success criteria and timelines, and proposing decision rules and go no go criteria. This also covers risk identification and mitigation plans, prioritization frameworks that weigh impact effort and strategic alignment, building dashboards and visualizations to surface signals across HR sales operations and product, communicating concise executive level recommendations with data backed rationale, and designing follow up monitoring to measure adoption and downstream outcomes and iterate on the solution.

MediumTechnical
0 practiced
You have four candidate experiments. For each you have estimated impact (in expected incremental revenue) and estimated engineering effort in developer-weeks. Describe a prioritization framework to rank them, compute expected ROI, and propose a rule to select the top one. Include how you would include strategic alignment in your decision.
MediumTechnical
0 practiced
Implement a bootstrap procedure in Python to compute a 95% confidence interval for the difference in conversion rates between two groups. Assume input arrays control_outcomes and treatment_outcomes containing 0/1 values. Provide a clear, production-aware implementation and explain choices like number of resamples.
EasyTechnical
0 practiced
Explain the basic steps of running an A/B test for a UI change that surfaces personalized recommendations. Include how to form the null and alternative hypotheses, describe Type I and Type II errors in this context, explain what a p-value measures, and how you would choose an appropriate significance threshold.
EasyTechnical
0 practiced
For a recommendation model, besides CTR, list 5 model and business metrics you would monitor to evaluate both online performance and business impact. For each metric, say whether it is a leading or lagging indicator and why.
MediumTechnical
0 practiced
Given a baseline conversion rate of 5% and a desired minimum detectable absolute uplift of 0.5 percentage points, explain how to compute required sample size per variant for 80% power and alpha = 0.05. Describe the inputs needed and the steps, and mention practical considerations when plugging into the formula.

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