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)
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What do you notice? What do you wonder?

 

 

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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.

 

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Part B)

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

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Part C)

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

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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.

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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? 

Draw your graph on paper, take a picture, and upload it using the upload icon

 

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

 

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Part B)

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

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Part C)

Describe the association in a sentence.

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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?

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Part E)

Does the fitted line help you identify more outliers?

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Part A)

Are you ready for more?

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.

Draw your graph on paper, take a picture, and upload it using the upload icon

 

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

 

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Part B)

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

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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.

 

Draw your graph on paper, take a picture, and upload it using the upload icon 

 

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

 

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Part D)

Is there an association between the two variables? Explain your reasoning.

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