Scatter Plots & Lines of Fit

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.8.F.B.4

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

Find the slope for the trend line using points (2,2) and (4,3)

• 2
• 1/2
• -2
• -1/2

Tags

CCSS.8.EE.B.5

What type of correlation does this scatter plot show?

• Negative correlation

• No correlation

• Positive correlation

• All of the above

What type of correlation does this scatter plot show?

• positive

• negative

• none

• all of the above

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

Tags

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed.  What is the equation of the line of best fit?

• y = (3/2) x
• y = 30x
• y = 30x + 300
• y = (3/2)x + 300

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.C.7

A teacher made the following graph showing absences vs. final grades.  Predict the grade of a student that has 7 absences.

• 45
• 50
• 60
• 70

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.IF.B.4

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• all the above

As x increases, y decreases.

• no correlation
• negative correlation
• correlation coefficient
• positive correlation

Tags

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.1

CCSS.8.SP.A.2

CCSS.8.SP.A.3

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Tags

CCSS.8.SP.A.1

CCSS.8.SP.A.2