An environmental science class conducted a research project to determine whether there was a relationship between the soil pH, x, and the percent dieback of new growth, y, for a particular type of tree. The table below contains the data the class collected.

a. Make a scatter plot of the data.
b. Describe the relationship between the two variables.
c. Find the correlation coefficient. Does this confirm or refute your answer to 6b?
How can you tell?
d. Can you conclude that higher soil pH causes less dieback of new growth?

x 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.5 5.0 5.1 y 7.3 10.8 10.4 9.3 12.4 112 6.6 10.0 9.2 12.4 2.3 4.3 6 1.0