Constructing Scatter Plots and Lines of Best Fit

Which best describes the association shown in the scatter plot?

• Positive Association

• Negative Association

• No Association

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

Which statement best represents this relationship?

• There is no relationship between the number of miles driven and the amount of gas remaining in the tank

• As the number of miles driven increases, the amount of gas remaining in the tank increases.

• As the number of miles driven increases, the amount of gas remaining in the tank decreases.

• A relationship cannot be determined from this scatter plot

What are the coordinates of the outlier?

• (2,1)

• (4,3)

• (1,2)

• There is not an outlier.

Which best describes the association shown in the scatter plot?

• Positive Association

• Negative Association

• No Association

Which statement best describes the relationship shown in this scatter plot?

• Students with a bigger shoe size earn a higher math score

• Students with a smaller show size earn a higher math score

• A student's shoe size has no effect on their math score

• A student with a shoe size of 8 will always earn a score of 80%

Based on the scatter plot, which statement best describes the trend?

• As the daily temperature increases, the number of beach visitors increases.

• as the daily temperature decreases, the number of beach visitors increases.

• As the daily temperature increases, there is no change in the number of beach visitors

• As the daily temperature increases, the number of beach visitors decreases

The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed.  What is the equation of the line of best fit?

• y = (3/2) x

• y = 30x

• y = 30x + 300

• y = (3/2)x + 300

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

• y = -25x + 170

• y = 25x + 170

• y = -(5/8) x + 170

• y = (5/8) x + 170

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

• A

• B

• C

• D