Scatterplot Practice

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

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.

Tracy and her family moved to the city in 2003. Use the equation to predict how many retail stores there were in 2003. 

• 173

• 155

• 143

• 36

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month. Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles?

• A. 50 min

• B. 80 min

• C. 45 min

• D. 60 min

Which graph shows a line of best fit for the scatter plot?

• Graph A

• Graph B

• Graph C

• Graph D

A researcher gathered data to predict the number of new types of plants (y) that will be in a state park after x years.  After making a scatter plot of the data, she determined the equation of a line of best fit to be
y = 0.25x + 8
Based on the equation, what is the number of new types of plants that will be in the park after 24 years?

• 8

• 14

• 32

• 64

Based on the scatterplot, what is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 40 beats per minute

• 60 beats per minute

Which graphs has a negative association?

• A

• B

• C

• D

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above