Recall without looking
What population does the metric cover? Is a month complete? Does an association establish a cause?
Check and explain
Define exclusions and observation windows. Partial periods need comparable windows. A descriptive comparison cannot isolate causal effects without an appropriate design.
Transfer task
Write two supported findings and two unsupported claims from the marketing case. For each unsupported claim name the missing evidence.
Record your next review
Write which concept you missed and one new example. Revisit after 2–3 days, then about a week; adjust the interval to your needs. This is a suggested study routine, not an automated reminder or saved score.
Try the activity before reading its reference. Keep your sources, commands and assumptions with your work. Companion activities are unsaved self-practice and do not award a certificate or change lesson progress.