Clear problem framing (turning a vague question into a testable plan)
Stakeholder communication (explaining results and limits in plain language)
Statistics for experiments (comparisons, uncertainty, sample size planning)
Causal thinking (separating correlation from likely cause)
SQL for data extraction and validation
Python or R for analysis and automation
Metric design (defining success measures and guardrails to prevent harmful side effects)
Data instrumentation and tracking concepts (events, funnels, attribution basics)
Dashboarding and reporting (e.g., building reliable recurring views)
Experiment operations (running, monitoring, and documenting tests at scale)