Let’s examine the relationship between a country’s gross national product (GNP) and the percentage of respondents willing to pay higher prices for goods to protect the environment. The following table displays information for five countries selected at random.
1. Calculate the correlation coefficient between a country’s GNP and the percentage of its residents willing to pay higher prices to protect the environment. What is its value?
2. Provide an interpretation for the coefficient.

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Country GNP per Capita Percentage Willing to Pay United States 29.24 44.9 Ireland 18.71 53.3 The Netherlands 24.78 61.2 Norway 34.31 40.7 Sweden 25.58 32.6