Education Technology

# Activities

• ##### Subject Area

• Math: Statistics: Describing Bivariate Data

9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

3.0

## Influence and Outliers

#### Activity Overview

In this activity, students will identify outliers that are influential with respect to the least-squares regression line. Students will describe the role of the location of a point relative to the other data in determining whether that point has influence on the least-squares regression line.

#### Objectives

• Students will identify outliers that are influential with respect to the least-squares regression line.
• Students will describe the role of the location of a point relative to the other data in determining whether that point has influence on the least-squares regression.
• Student will use appropriate tools strategically (CCSS Mathematical Practices).

#### Vocabulary

• centroid
• influence
• least-squares regression line
• residual
• scatter plot