Scatterplot Applications

Create a scatterplot from this data. Write the line of best fit for the data.

• y = 5.02x + 1.82

• y = 8x - 15

• y = 1.82x +5.02

• y = -1.82x +5.02

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

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

Which with is the line of best fit?

• Black

• Orange

• Red

• Blue

What is the trend for this scatter plot

• Negative

• Positive

• None

Which scatter plot shows no relationship?

• Graph A

• Graph B

• Graph C

• Graph D

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

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

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

• 2

• 1/2

• -2

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No