Scatter plots and trend lines

What is the type of association?

• Negative

• no association

• positive

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What type of association does this scatter plot show?

• positive linear association

• negative linear association

• no association

• nonlinear 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 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

1.  Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam? 

• 65

• 92

• 70

• 76

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

• graph 1

• graph 2

• graph 3

• graph 4

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

Find the slope of the line.

• -5/4

• 5/4

• -4/5

• 4/5

Which of the following are ways to find the rate of change?

• change in y over change in x

• rise over run

• subtract y coordinates over subtract x coordinates

• all these methods will work

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

• A

• B

• C

• D