For a variety of reasons, a larger percentage of people are concerned today about the state of the environment than in years past. This has led to the formation of environmental action groups that attempt to alter environmental policies nationally and around the globe. A large number of environmental action groups subsist on the donations of concerned citizens. Based on the following eight countries, examine the data to determine the extent of the relationship between simply being concerned about the environment and actually giving money to environmental groups.
a. Construct a scatterplot of the two variables, placing percentage concerned about the environment on the horizontal or X-axis and the percentage donating money to environmental groups on the vertical or Y-axis.
b. Does the relationship between the two variables seem linear? Describe the relationship.
c. Find the value of the Pearson correlation coefficient that measures the association between the two variables and offer an interpretation.