Scatter Plots and Lines of Trend

Scatter Plots and Lines of Trend

Multiple Choice

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20
• y = -x + 19
• y = x + 20
• y = 2/3x + 15 

Multiple Choice

Choose the graph with a trend line that best fits the data.

• graph 1

• graph 2

• graph 3

• graph 4

Multiple Choice

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

• 2
• 1/2
• -2
• -1/2

Multiple Choice

Which of the following would be the most accurate equation for the scatter plot?

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 25x + 7

Multiple Choice

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

Multiple Choice

As the age of the car increases, its value decreases. Which scatter plot represents this relationship?

• A
• B
• C
• D

Multiple Choice

Based on this scatter plot, a student with 6 absences should get approximately what score on the final exam? 

• ≅ 58
• ≅ 92
• ≅ 100
• ≅ 76

Multiple Choice

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