Analyze Scatterplots

What type of relationship does this graph have?

• Positive

• Negative

• No Relationship

• Constant 

• 
• 
• 
• 

• 
• 
• 
• 

The police department tracked the number of ticket writers and number of tickets issued for the past 8 weeks.  The scatter plot shows the results.  Which statement is true?

• More ticket writers results in fewer tickets issued.

• There were 50 tickets issued every week.

• When there are 10 ticket writers, there will be 800 tickets issued.

• More ticket writers results in more tickets issued.

This scatter plot shows the average traffic volume and average vehicle speed on a certain freeway for 50 days in 1999.  Which statement best describes this relationship.

• As traffic volume increases, vehicle speed increases.

• As traffic volume increases, vehicle speed decreases.

• As traffic volume increases, vehicle speed increases at first, then decreases.

• As traffic volume increases, vehicle speed decreases at first, then increases.

Which graph shows the line of best fit?

• Graph A

• Graph B

• Graph C

• Graph D

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

• Yes

• No

When analyzing scatterplots, what does a correlation coefficient of -0.8 indicate about the relationship between the variables?

• No relationship

• A strong positive relationship

• A strong negative relationship

• A weak positive relationship

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

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