Unit 8: Conditional Probability

Students extend their understanding of probability to compound events. They use lists, tables, trees, and Venn diagrams to represent sample spaces, apply the Addition Rule and the Multiplication Rule, define conditional probability, and use probability to test events for independence.

Worksheets

Every sheet has an answer key. Free to print, no login.

Unit

📝 Worksheet ✅ Answer guide

Concept

📝 Worksheet ✅ Answer key

Practice

Set 1

📝 Worksheet ✅ Answer key

Set 2

📝 Worksheet ✅ Answer key

Advanced

Set 1

📝 Worksheet ✅ Answer key

Set 2

📝 Worksheet ✅ Answer key

What this unit covers

A Up to Chance · 6 lessons

Goals

• Use organized lists, tables, and tree diagrams to calculate probabilities for compound events.
• Use the addition rule to calculate probabilities.

Lessons

1. Up to Chance (Optional)
2. Playing with Probability
3. Sample Spaces
4. Tables of Relative Frequencies
5. Combining Events
6. The Addition Rule

B Related Events · 4 lessons

Goals

• Determine whether two events are independent or dependent using probability.
• Use the multiplication rule, P(A and B) = P(A) · P(B | A), to find the probability of an event.

Lessons

1. Related Events
2. Conditional Probability
3. Using Tables for Conditional Probability
4. Using Probability to Determine Whether Events Are Independent

C Let’s Put It to Work · 1 lesson

Lessons

1. Probabilities in Games (Optional)

Helpful to know first

The curriculum says this unit builds on these.

Grade 7 Math · Unit 8 Probability and Sampling

Open unit →