PSABM6WY - Student Facing Task---Acc7.5 Lesson 22 Observing More Patterns in Scatter Plots (8.SP.A.1, 8.SP.A.2, 8.SP.A.3)

What do you notice? What do you wonder?

Part A)

Your teacher will give you a set of cards. Each card shows a scatter plot.

Sort the cards into categories and describe each category.

Part B)

Explain the reasoning behind your categories to your partner. Listen to your partner’s reasoning for their categories.

Part C)

Sort the cards into two categories: positive associations and negative associations. Compare your sorting with your partner’s and discuss any disagreements.

Part D)

Sort the cards into two categories: linear associations and non-linear associations. Compare your sorting with your partner’s and discuss any disagreements.

Part A)

Is there an association between the weight of an animal’s body and the weight of the animal’s brain?

Use the data in the table to make a scatter plot. Are there any outliers?

If you do not have the ability to upload an image of your work, type "Graph is on paper."

Part B)

After removing the outliers, does there appear to be an association between body weight and brain weight?

Select one:
Part C)

Describe the association in a sentence.

Part D)

Using a piece of pasta and a straightedge, fit a line to your scatter plot, and estimate its slope. What does this slope mean in the context of brain and body weight?

Part E)

Part A)

Use one of the suggestions or find another set of data that interested you to look for associations between the variables.

• Number of wins vs number of points per game for your favorite sports team in different seasons
• Amount of money grossed vs critic rating for your favorite movies
• Price of a ticket vs stadium capacity for popular bands on tour

After you have collected the data, create a scatter plot for the data.

If you do not have the ability to upload an image of your work, type "Graph is on paper."

Part B)

Are any of the points very far away from the rest of the data?

Part C)

Would a linear model fit the data in your scatter plot? If so, draw it. If not, explain why a line would be a bad fit.