Interpreting Trend Lines

Which runner stopped for a rest?

• Albert

• Bob

• Charlie

Tags

CCSS.8.EE.B.5

What type of association (correlation) does this graph have?

• positive 

• negative

• none

• all of the above

Find the slope for the trend line using points (2,2) and (4,3)
Use m= (Y2-Y1)/(X2-X1)

• 2

• 1/2

• -2

• -1/2

Tags

CCSS.8.EE.B.5

Which sentence describes the relationship shown on this scatterplot?

• 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

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Tags

CCSS.HSF.BF.A.2

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.F.A.3

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam? 
Hint: create the trend line first

• 65

• 92

• 70

• 76

Which best describes the form of this scatterplot?

• linear

• nonlinear

• scattered

Tags

CCSS.8.F.A.3

What does "m" represent in y=mx+b?

• y-intercept

• slope

• macaroni

• nothing

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What does 'b" represent in y=mx+b

• y-intercept

• beans

• nothing

• slope

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3