Education Technology

# Tootsie Pops & Hand Span

Math: Statistics: Describing Bivariate Data
9-12
45 Minutes
TI-Nspire™ CX/CX II
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™
TI-Nspire™ CAS
3.0
• At least 34 Tootsie Pops (you might need more if you want students to each have one) and a wide bowl or bucket (a children’s plastic beach bucket works well)
• One or more rulers with both inches and centimeters
Lessons
TNS

# Tootsie Pops & Hand Span

Activity Overview

Students will collect data, find the linear regression model of the data, and address aspects of the data that affect regression.

Objectives

Students will:

• decide on data collection methodology and collect data.
• plot data on a scatter plot.
• find and interpret the correlation coefficient, coefficient of determination, and the equation of the least-squares regression line.
• add the least-squares regression line to their scatter plot and make a residual plot.
• identify outliers and influential points.
• use their model to make predictions.
• discuss sources of error in the data collection, and discuss causation.

Math: Statistics: Describing Bivariate Data
9-12
45 Minutes
TI-Nspire™ CX/CX II
TI-Nspire™ CX CAS/CX II CAS
TI-Nspire™
TI-Nspire™ CAS
3.0
• At least 34 Tootsie Pops (you might need more if you want students to each have one) and a wide bowl or bucket (a children’s plastic beach bucket works well)
• One or more rulers with both inches and centimeters
Lessons
TNS
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