Compound Events, Sample Spaces, and Tree Diagrams

Compound Events, Sample Spaces, and Tree Diagrams practice with teacher guidance, common slips, and next-step routes.

Surface

This skill appears in Conditional action-probability comparison.

Task formats

Conditional action-probability comparison

Conditional action-probability comparison asks the player to condition on a published observation, enter the exact target-event probability for each allowed action, and choose the better action.

ActionCondition on a published observation, enter the exact target-event probability for each allowed action, and choose the better action.

CheckChoose the answer that matches the visible prompt.

UseSupport / Core / Transfer

ShowsCheck only

PresentationCompact / Standard / Extended

Practice focus

Balanced growth

Selection

Fresh independent work can move toward Core, Transfer, or Challenge routes; help use or confusion keeps support visible.

Help

Hints keep attention on the visible structure; reveals show the path without counting as independent evidence.

Presentation

Presentation can reduce reading and interaction load without changing the selected skill. Practice focus can bias compatible work without breaking prerequisites or story fit.

Story fit

episodes with datasets, centers, sample spaces, event probabilities, or action comparisons