PSABM6WU - Student Facing Task---Acc7.5 Lesson 20 Describing Trends in Scatter Plots (8.SP.A.1, 8.SP.A.2)
Assign to Canvas
Assign to Google Classroom

Which one doesn’t belong? 

 

 
 
copied for free from openupresources.org
Type your answer below:
Part A)

Your teacher will give you a piece of pasta and a straightedge.

Here are two copies of the same scatter plot. Experiment with drawing lines to fit the data. Pick the line that you think best fits the data. Compare it with a partner’s.

 

Using the graph your teacher provided, draw your line of best fit 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."

 

copied for free from openupresources.org

Type your answer below:
Part B)

Here are two copies of another scatter plot. Experiment with drawing lines to fit the data. Pick the line that you think best fits the data. Compare it with a partner’s. 


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."

 

Type your answer below:
Part C)

In your own words, describe what makes a line fit a data set well.

Type your answer below:
Part A)

The scatter plots both show the year and price for the same 17 used cars. However, each scatter plot shows a different model for the relationship between year and price.

Look at Diagram A

 

 

For how many cars does the model in Diagram A make a good prediction of its price?

 

copied for free from openupresources.org

Type your answer below:
Part B)

 

Look at Diagram A

 

 

For how many cars does the model underestimate the price?

 

 

Type your answer below:
Part C)

 

Look at Diagram A

 

 

For how many cars does the model overestimate the price?

 

 

Type your answer below:
Part D)

The scatter plots both show the year and price for the same 17 used cars. However, each scatter plot shows a different model for the relationship between year and price.

Look at Diagram B.

 

 

For how many cars does the model in Diagram B make a good prediction of its price?

Type your answer below:
Part E)

Look at Diagram B.

 

For how many cars does the model underestimate the price?

 

 

Type your answer below:
Part F)

Look at Diagram B.

 

 

For how many cars does the model overestimate the price?

 

 

Type your answer below:
Part G)

For how many cars does the prediction made by the model in Diagram A differ by more than $3,000? What about the model in Diagram B?

Type your answer below:
Part H)

Which model does a better job of predicting the price of a used car from its year?

Select one:
Part A)

Is this line a good fit for the data?

 

copied for free from openupresources.org

Select one:
Part B)

Draw a line that fits the data better.

 

Using the graph your teacher provided, draw your line of best fit 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."

Type your answer below:
Part C)

Is this line a good fit for the data?

Select one:
Part D)

Explain your reasoning.

Type your answer below:
Part E)

Draw a line that fits the data better.

 

Using the graph your teacher provided, draw your line of best fit 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."

Type your answer below:
Part A)

Are you ready for more?

These scatter plots were created by multiplying the x-coordinate by 3 then adding a random number between two values to get the y-coordinate
.
The first scatter plot added a random number between -0.5 and 0.5 to the y-coordinate. The second scatter plot added a random number between -2 and 2 to the y-coordinate. The third scatter plot added a random number between -10 and 10 to the y-coordinate.

 

For each scatter plot, draw a line that fits the data.

 

Using the graph your teacher provided, draw your line of best fit 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."

 

copied for free from openupresources.org

Type your answer below:
Part B)

 

Explain why some were easier to do than others.

Type your answer below: