Scatter Plots Linear Regression

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

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

What type of correlation does this graph have?

• Negative

• no association

• positive

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 12 absences should get approximately what score on the final exam?

• 60

• 92

• 70

• 76

What is the trend for this scatter plot

• Negative

• Positive

• None

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D

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

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

• Strong positive

• Weak positive

• Strong negative

• Weak negative

Given the following Scatter Plot, select the option that is most likely the r value.

The linear regression equation is y = 61.93x - 1.79.  Use the equation to predict how far this person will travel after 10 hours of driving.

• 10 miles

• 617.5 miles

• 0.19 miles

• 500 miles