Scatterplot Types

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

• a
• b
• c
• d

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 is the trend for this scatter plot

• Negative

• Positive

• None

What relationship is shown in the scatter plot?

• As the cost goes down, the number sold goes down.

• As the cost goes up, the number sold goes down.

• As the cost goes down, the number sold remains the same.

• There is not relationship between cost and the number sold.

The following scatter plot shows the weights and lengths of some dinosaurs.  Which statement accurately describes the information?

• The information shows a positive correlation.  The weight of a dinosaur tends to increase according to its length.

• The information shows a negative correlation.  the weight of a dinosaur tends to decrease according to its length.

• The information shows no correlation.  The weight and length vary according to the type of dinosaur.

• The information shows no correlation.  The relationship between the weight and length of a dinosaur is uncertain.

Which graph best shows a positive correlation between the number of hours studied and the test scores?

• Graph A

• Graph B

• Graph C

• Graph D

Which graph shows a line of best fit for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

A researcher gathered data to predict the number of new types of plants (y) that will be in a state park after x years.  After making a scatter plot of the data, she determined the equation of a line of best fit to be
y = 0.25x + 8
Based on the equation, what is the number of new types of plants that will be in the park after 24 years?

• 8

• 14

• 32

• 64

Based on the line of best fit for the scatter plot, which of the following amounts is closest to the cost of a 120-minute phone call?

• $10

• $12

• $15

• $20