Education Technology

# Activities

• ##### Subject Area

• Math: Middle Grades Math: Statistics and Probability

6-8

45 Minutes

• ##### Device
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition
• TI-84 Plus C Silver Edition
• TI-84 Plus CE

TI Connect™

## We Have the Same Birthday

#### Activity Overview

In this activity, students use simulations to answer a popular question involving probabilities. They will use the randInt and mean commands to determine the average number of people that need to be in a room to share a birthday.

#### Key Steps

• In this activity, students will use simulations to answer a popular question regarding probability – how likely is it that a group of people share a birthday. Students begin by collecting the birthdays of everyone in the class and analyzing the data.

• Students will then conduct a simulation generating random birthdays to find the average number of people that need to be in a room to have a greater than 50% chance of two people sharing a birthday.