Two-way tables

Completing a two-way table from its totals, one forced cell at a time.

Probabilities from a two-way table

A cell count over the grand total, and reading which total a question wants.

Frequency trees

Filling in counts along two successive splits, and reading the finished tree.

Practice

Two-way tables

Completing a two-way table from its totals, one forced cell at a time.

Practice

Probabilities from a two-way table

A cell count over the grand total, and reading which total a question wants.

Practice

Two-way tables and frequency trees review

Completing tables and frequency trees from totals, then reading probabilities.

Mixed review