Scatter Plot, Trend Lines, and MAD

• 92

• 65

• 67

• 76

• $115

• $150

• $105

• $135

• The number of siblings a person has and the person's GPA.

• The number of guests at a hotel and the total water consumption.

• The total number of miles driven and the total gallons of gas used.

• The number of people at a concert and the total concession sales.

Which scatter plot shows both positive and linear association?

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• 
• 
• 

Sammy is selling his comic book collection on the internet. The scatterplot shows how many comic books he has left at the end of each day. Using the trend line, after how many days should Sammy predict to have 10 comic books left?

• 8

• 0

• 9

• 2

Which scatter plot could have a trend line whose equation is y = 3x + 10?

• A

• B

• C

• D

Based on this scatter plot, a student with 6 absences should get approximately what score on the final exam? 

• ≅ 58

• ≅ 92

• ≅ 100

• ≅ 76

Which scatter plot could have a trend line whose equation is y hat= 3x + 10?

• A

• B

• C

• D

Match the scatter plot to the equation that could represent the equation of its trend line.

• y = 3x

• y = x + 3

• y = -x + 5

• y = -5x

• The relationship is not linear

Match the scatter plot to the equation that could represent the equation of its trend line.

• y = 3x

• y=4x-2

• y = -x + 5

• y = -5x

• The relationship is not linear