A group of scientists collected the following data. (See image below) Use the scatter plot to answer the following questions.

1.) Find a trend line to model the data and add it to the scatterplot.

2.) How might you use this line to describe the relationship between the body length of a bird and a bird’s wingspan? (Describe the general relationship then discuss the correlation between the two variables and any other relationships that you notice. I’m looking for more than one sentence.)

3.) Write an equation for this line using for wingspan and for body length. Show work.

4.) What estimate would you give for the wingspan of a bird with a body length of 35 inches? Explain your reasoning.

5.) Compare the function model that you used for this problem to the one you used for the sixth-graders height and arm span data, what similarities and differences do you see? Also include a general statement comparing human arm span and bird wingspan.