Scatterplots / Correlation

What type of correlation does this scatterplot display?

• Strong Positive

• Strong Negative

• Weak Negative

Estimate the correlation coefficient.

• r is close to 1

• r is close to -1

• r is close to -0.5

• r is close to 0.5

What type of correlation? The temperature outside and the amount of ice cream sales. 

(As the temperature increases, ice cream sales . . . )

• Positive correlation

• Negative correlation

• No correlation

What type of correlation does this graph have?

• Negative 
• no association
• positive 

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

• 6
• 50
• 55
• 59

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump
• negative: the less you run the less distance of your jump
• positive: the further your running start the less your distance

What type of correlation does this graph have?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

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

What type of correlation does this scatterplot display?

• Positive

• Negative

• No Correlation

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 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters