Interpret and Predict from Scatter Plots

A scatter plot created with technology generated the following values.

Describe the strength of the linear association for this data.

• Strong Positive

• Moderate Positive

• Weak

• Strong Negative

Use the line of best fit to predict a value for y if the value of x is 18.

• 21

• 20

• 16

• 18

Use this data to write the equation of the line of best fit in slope-intercept form

The scatterplot below suggests which of the following types of data relationship?

• Weak, negative

• weak, positive

• strong, negative

• strong, positive

Tags

CCSS.HSF-LE.A.1B

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Tags

CCSS.HSF-LE.A.1B

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

Tags

CCSS.HSF-LE.A.1B

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.F.A.3

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing