Line of Best Fit

What is the trend for this scatter plot

• Negative

• Positive

• None

What is the type of association?

• Negative 
• no association
• positive 

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

• 6

• 50

• 55

• 80

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

What is the equation of the line of best fit?

• y= 2x

• y=3x+7

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

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

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

Is this line an accurate line estimate of best fit for the data?

• Yes

• No