Scatterplots Retake

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

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? 

• 50 min

• 80 min

• 45 min

• 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

What type of relationship does this graph have?

• Positive 

• Negative

• No Relationship

• Constant

What type of relationship does this graph show?

• Positive

• Negative

• No Relationship

• Constant 

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

Based on this scatterplot, approximate what score should a student who attended class 22 days expect to receive on the exam?

• 84

• 71

• 95

• 75

Describe the correlation coefficient if

r = 0.90

• Positive, weak

• Positive, strong

• Negative, weak

• Negative, strong

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak

• -0.26 weak

• -0.26 moderate

• 0.07 strong

Find the equation of the line of best fit for this table.

• y = -2.28x + 51.08

• y = 51.08x - 2.28

• y = 0.06x - 0.26

• y = -2.28x - 0.26