Education Technology

Conditional Probability

Subject Area
Math: Statistics: Probability and Random Variables
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™ Apps for iPad®
TI-Nspire Version
3.6
Resource Types
Lessons
Format
TNS

Conditional Probability

Activity Overview

This lesson involves thinking about probability when additional information is given.

Objectives

  • Students will identify the difference between the probability of an outcome and the conditional probability of an outcome.
  • Students will answer probability questions using information presented in a table and in a graph.

Vocabulary

  • conditional probability
  • probability
  • two-way table

About the Lesson

This lesson involves thinking about probability when additional information is given.
As a result, students will:

  • Investigate probability questions using tabular and graphical information.
  • Explain why a two-way table with two rows and two columns with fixed row and column totals needs only one input to determine the others.
  • Answer questions about the probability of an outcome using data from a two-way table.
  • Use bar graphs separated according to categories to answer probabilities and connect these graphs to information of the form P(A|B).
  • Choose between information presented as the probability of A given B and the probability of B given A (A|B and B|A) to answer specific probability questions.

Subject Area
Math: Statistics: Probability and Random Variables
Level
9-12
Activity Time
45 Minutes
TI Calculator
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™ Apps for iPad®
TI-Nspire Version
3.6
Resource Types
Lessons
Format
TNS
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