Chapter 9 Review

As x increases, y increases

• correlation coefficient
• causation
• positive correlation
• negative correlation

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

What is the correlation?

• Negative correlation
• No correlation
• Positive correlation
• All of the above

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

• A
• B
• C
• D

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases
• As x increases, y increases
• As x decreases, y decreases

Select the statement that best describes the line.

• The line is the line of best fit.
• The line is NOT a line of best fit because it does not pass through two points.
• The line is NOT a line of best fit because it does not go through the middle of the data set.
• The line is NOT a line of best fit because it does not go through the origin.

Which graph shows the line of best fit for the data?

• Graph A

• Graph B

• Graph C

• Graph D

Which graph shows the line of best fit for the data?

• Graph A

• Graph B

• Graph C

• Graph D

Which graph shows the line of best fit for the data?

• Graph A

• Graph B

• Graph C

• Graph D

What is the missing number?

• 14

• 8

• 22

• 30