Author note — to cover

Construct the grid for two events with one axis per event: totals, differences and products of two dice, or two spinners; every cell one equally likely outcome. Question types: complete and count the grid. Both tiers. Probabilities follow on the sibling page; experiments with more than two stages need tree diagrams. (P6, P7)

Introduction

—coming soon—

Practice and continue

Practice

Sample space diagrams

The grid displaying every outcome of two events, one axis per event.

Next lesson

Probabilities from a sample space

Counting the cells an event occupies and dividing by the whole grid.