An energy economist studying the growth and decay of both the coal and natural gas industries wanted to leveragedata collected by environmental scientists. Particularly, the economist wanted to study the link between the total yearly carbon emissions from both energy sources. They looked at 30years of total yearlycarbon emissionsfor a particular nation (measured in million metric tons of carbon dioxide)for both forms of energy. The data is provided below. Use Excel to calculate the correlation coefficient r between the two data sets. Round your answer to two decimal places.

MMTons CO2 Natural Gas

MMTons CO2 from Coal

362.115

1805.112

399.512

1809.525

392.326

1745.279

468.730

1570.326

434.550

1513.523

456.864

1512.334

503.702

1369.385

561.474

1245.502

490.599

1258.338