Lesson 3

Discover

 

Try This 1

 

Go to Scatter Plots—Activity A to discover negative and positive trends. As you work with this activity, think about the following questions:

 

Screenshot reprinted with permission of ExploreLearning

• What do you notice when you toggle the “Negative trend” and “Positive trend” buttons?
• Select “Adjust trend” and move the slider. What happens to the scatterplot graph?
• Select “Show actual trend line” and move the slider. What happens to the equation of the line?

Answer the questions that follow the Scatter Plots—Activity A interactive. Did you get the questions all correct? (You can click on “Check your Answers” to find out.) If you made a mistake and can’t correct your error, consult your teacher or a partner for help.

 

Save your responses in your course folder.

 

Share 1

 

With a partner or in a group, share your findings from Try This 1. Be sure to address the following questions:

1. What is meant by negative trend and positive trend?
2. What happens to the points on the scatterplot as you adjust the slider from “Negative trend” to “No trend” to “Positive trend”?
3.  
   1. When is the slope of the trend line positive?
   2. When is the slope of the trend line negative?

Save your summarized responses in your course folder.