CCSS.Math.Content.8.SP.A.2

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• A. 50 min
• B. 80 min
• C. 45 min
• D. 60 min

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CCSS.Math.Content.8.SP.A.2

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

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CCSS.Math.Content.8.SP.A.2

Make a prediction for a resting heart rate after 6 hours of exercise a week.

• 6
• 50
• 55
• 59

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CCSS.Math.Content.8.SP.A.2

What kind of correlation?

• Positive
• Negative
• No

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CCSS.Math.Content.8.SP.A.2

Which sentence describes the relationship shown on this scatter plot?

• The more time spent training, the longer it takes to run 100 m.  
• As the time spent training increases, the time to run 100 m decreases. 
• As the time spent training decreases, the time to run 100 m decreases. 

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CCSS.Math.Content.8.SP.A.2

This implies that one variable has a direct affect on the other variable.

• Correlation
• Causation

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CCSS.Math.Content.8.SP.A.2

What does the correlation coefficient (R-Value) tell us? 

• Style + Type
• Percentage + Direction
• Strength + Direction
• Strength + Style

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CCSS.Math.Content.8.SP.A.2

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive

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CCSS.Math.Content.8.SP.A.2

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

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CCSS.Math.Content.8.SP.A.2

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the line of best fit to predict how many pages would be in a book with 6 chapters.

• 100 pages

• 170 pages

• 60 pages

• 20 pages

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CCSS.Math.Content.8.SP.A.2