Scatter Plot/Line of Best Fit Quiz (2020)

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

• 55
• 0
• 103
• 100

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

If the debate team plans to practice for 6 hours, how many debates should they win?

• 20
• 16
• 24
• 28

Write an equation in slope - intercept form for trend line.

• y = 1x+1/2

• y = 1/2x + 1

• y = 1x + 1

• y = 1/2x + 2

Tags

CCSS.8.EE.B.5

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

• A
• B
• C
• D

Tags

CCSS.HSF.LE.B.5

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

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

What is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

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.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

What type of correlation does this graph have?

• positive
• negative
• none
• all of the above

Tags

CCSS.HSF-LE.A.1B

What is the type of correlation?

• Negative

• No correlation

• Positive