Activity Overview
In this activity model a linear relationship by fitting an appropriate line of best fit to a scatterplot and using it to describe and quantify associations related to time and altitude for a weather balloon. Students make predictions based on the model and check them using the associated video.
This activity includes a video tutorial.
Objectives
- Fit a Least Squares Regression line
- Interpret the intercept and gradient
- Extrapolate and Interpolate
- Understand Least Squares method
Vocabulary
- Least Squares Regression
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- Independent variable
- Dependent variable
- Mean (average)
- Extrapolate
- Interpolate
About the Lesson
A weather balloon is released and travels upwards. On its journey, will the speed of the weather balloon, increase, decrease or remain constant? This question is posed to students. An amazing video is included from which students are able to collect and model the data using the appropriate regression model. Just how accurate is a linear model? Students use their equation to make predictions.
Watch the activity tutorial