Scatter Plots

Carey and Justin are raising money to purchase books for the library. The more money they raise, the more books they will be able to purchase for the library.

Which of the variables is dependent?

• amount of money raised

• number of books

The higher the temperature of water, the faster the egg will cook. Select the independent variable.

• Faster Egg Cooks

• Higher Temperature

Molly investigated if the age of students caused them to be better drivers. What is the independent variable?

• Type of car

• Skill of driving

• Age of student

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

Which best describes the form of this scatterplot?

• linear
• nonlinear
• scattered

What type of association does this graph have?

• positive
• negative
• none
• all of the above

What type of association does this scatter plot represent?

• positive linear association
• negative linear association
• no association
• nonlinear association

Estimate the correlation coefficient

• r = 1

• r = -1

• r ≈ -0.8

• r ≈ 0.8

• r ≈ -0.5

Estimate the correlation coefficient.

• r is close to 1

• r is close to -1

• r is close to 0

• r is close to -0.5

• r is close to 0.5

Estimate the correlation coefficient.

• r is close to zero

• r is close to -1

• r is close to 1

• r is close to -1.5

• r is close to 1.5