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8 branches of analytics, product and AI interview questions
Explore eight skill tracks, called branches, filterable by subtopic, company, tool and difficulty. SQL questions run against sample tables, choice and numeric answers are checked instantly, and written cases are scored against evaluation criteria.
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6 questions
Why peeking inflates false positives
Explain the statistical cost of checking results daily.
Quick check · Readout · 5 min · Easy
Experimentation & A/B Testing · Original Uplift question
Big week-1 lift that fades to zero
A redesigned button shows +8% engagement in week 1, but by week 4 treatment and control are indistinguishable.
Quick check · Readout · 5 min · Easy
Experimentation & A/B Testing · Company-context scenario
Wins in every segment, loses overall
ProYour treatment beats control in BOTH the mobile segment and the desktop segment, yet loses when you pool all users together.
Quick check · Readout · 6 min · Medium
Experimentation & A/B Testing · Company-context scenario
A PM wants to ship the moment p < 0.05
A PM watches the experiment dashboard daily and wants to ship as soon as it crosses p < 0.05.
Written case · Readout · 12 min · Medium
Experimentation & A/B Testing · Company-context scenario
Triage a sample-ratio mismatch
ProA nominal 50/50 Meta messaging experiment reports 520,000 control users and 480,000 treatment users.
Written case · Readout · 20 min · Hard
Experimentation & A/B Testing · Reported at Meta
Spot a novelty effect in a VR interface test
A new VR interface lifts daily use by 18% in days 1–3, 7% in days 4–7, and 0% in days 8–21.
Quick check · Readout · 7 min · Easy
Experimentation & A/B Testing · Reported at Meta