scatter plots

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

As x increases, y increases

• negative correlation

• no correlation

• positive correlation

What is the type of association?

• Negative correlation

• no correlation

• positive correlation

What type of association does this graph have?

• positive correlation

• negative correlation

• no correlation

• all of the above

If a scatterplot has no correlation then...

• ...it has no ordered pairs
• ...it has ordered pairs that have a negative pattern
• ...its ordered pairs have no predictable pattern
• ...if it makes a lion on a graph (roar!)

Tags

CCSS.8.SP.A.1

What type of association does this scatter plot show?

• positive linear correlation

• negative linear correlation

• no correlation

• nonlinear correlation

What type of association does this scatter plot represent?

• positive linear correlation

• negative linear correlation

• no correlation

• nonlinear correlation

Which equation best represents the data?

• A.  y= -3/5x + 2
• B  y = 5/3x -2 
• C  y = -3/5x - 2
• D  y= 5/3x + 2

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.2

CCSS.8.SP.A.3

Which equation best represents the data?

• A  y = 3/4x + 1
• B  y = 4/3x - 1
• C  y = -3/4x - 1
• D  y = -4/3x - 1

Tags

CCSS.8.EE.B.5