Trend Lines and M.A.D.

As x increases, y decreases.

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

As x increases, y increases

• correlation coefficient
• causation
• positive correlation
• negative correlation

What type of association does this graph have?

• positive
• negative
• none
• all of the above

What is the type of association?

• Negative 
• no association
• positive 

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

Which best describes the form of this scatterplot?

• linear
• nonlinear
• scattered

Tags

CCSS.8.F.A.3

If Joe worked 30 hours, how much is he expected to earn?

• $600
• $200
• $1000
• $800

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

According to the graph, how many students are in the class?

• 26
• 25
• 15
• 30

Tags

CCSS.HSF.IF.B.4

If m = -3/4 and b = 9, what is the equation of the trend line in y= mx + b?

• 0 = -3/4 (9) +9

• y = -3/4 x + 9

• y = -3/4 x - 9

• y = 3/4 + 9

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3