Scatter Plots & Trend Lines

Match the scatter plot to the equation that could represent the equation of its trend line.

• y = 3x

• y = 4x - 2

• y = -5x

• y = -2x - 4

• The relationship is not linear.

Which equation matches the trend line?

Which equation matches the trend line?

Use the scatter plot to mark each statement as true or false: The equation of the trend line is y = 2500x -125

• True; the equation is y = 2500x -125

• False; the equation is y = -250x + 2500

• False; the equation is y = 2500x - 250

• False; the equation is y = -125x + 2500

Use the scatter plot to mark each statement as true or false: The hikers began at an elevation of about 2,500 feet.

• True

• False; the hikers began at 125 feet.

• False; the hikers began at 250 feet.

• False; the hikers began at 1000 feet.

Use the scatter plot to mark each statement as true or false: As time increases, the elevation increases.

• True

• False; as time increases the elevation decreases.

• False; there is no association between time and elevation.

Use the scatter plot to mark each statement as true or false: There are several outliers in the scatter plot.

• True

• False; there is only one outlier in the scatter plot.

• False; there are no outliers in the scatter plot.

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 pages would be in a book with 6 chapters. 

• ≅100 pages

• ≅170 pages

• ≅60 pages

• ≅20 pages

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

• A

• B

• C

• D

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