Math Scatter Plots

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

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

What is a scatter plot?

• A graph that shows the relationship of two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

Which statement describes the trend in the scatter plot below?

• as PDSI increases, the temperature decreases

• as PDSI increases, the temperature increases

• no correlation between PDSI and temperature

• as PDSI decreases, the temperature decreases

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

What type of association (correlation) does this graph have?

• positive

• negative

• none

• all of the above

Which sentence describes the relationship shown on this scatter plot?

• The more time spent training, the longer it takes to run 100 m.  

• As the time spent training increases, the time to run 100 m decreases. 

• As the time spent training decreases, the time to run 100 m decreases. 

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

What type of association does this graph have?

• positive

• negative

• none

• all of the above