Describing Association

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

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

How would you describe the direction of the association shown in the following scatterplot?

• Positive Association

• Negative Association

• No Association

How would you describe the form of the following association shown in the scatterplot?

• Linear

• Non-Linear

Does there appear to be an outlier in this association as shown on the scatterplot?

• Yes

• No

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

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

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

What is the correlation?

• Negative correlation

• No correlation

• Positive correlation

• All of the above

How would you describe the direction of the association shown in the following scatterplot?

• Positive Association

• Negative Association

• No Association