Scatterplots

What is the type of association?

• Negative 
• no association
• positive 

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2

What type of association does this graph have?

• positive
• negative
• none
• all of the above

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Students in a science class investigated how the speed of changes with the air temperature outside. The data is shown in the scatterplot. Based on the scatterplot, what is the best prediction of the speed of sound when the air temperate is 50 degrees C?

• 350 m/s

• 355 m/s

• 360 m/s

• 365 m/s

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries. Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

• $240

• $190

• $210

• $300

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

Which scatterplot suggests a linear relationship between x and y?

• 
• 
• 
• 

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Which scatterplot suggests a linear relationship between x and y?

• 
• 
• 
• 

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Which scatterplot does NOT suggest a linear relationship between x and y?

• 
• 
• 
• 

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Mrs. Collins made a scatterplot to show the relationship between the number of absences a student in her class has and the student's final exam score. Based on this scatterplot, approximately what score should a student with 6 absences expect to receive on the final exam?

• 65

• 92

• 67

• 76

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

The daily attendance at a bowling alley was recorded for 15 days. The scatterplot shows the number of lanes rented each day and the number of people who bowled that day. Which statement is best supported by the scatterplot?

• There is a non-linear assocation between the number of lanes rented and the number of people who bowl.

• There is a negative linear association between the number of lanes rented and the number of people who bowl.

• There is no apparent association between the number of lanes rented and the number of people who bowl.

• There is a positive linear association between the number of lanes rented and the number of people who bowl.

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

Julie made 25 international long-distance phone calls to London last month. The scatterplot below shows the length and cost of each phone call she made. Which conclusion is best supported by the scatterplot?

• As the length of a call increases, the cost of the call increases.

• As the length of a call increases, the cost of the call remains the same.

• As the length of a call increases, the cost of the call descreases.

• There is no relationship between the length of a call and the cost of a call.

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2