Question: The Sanchez household is about to install solar panels to reduce the cost of heating their house. In order to know how much the solar panels will help, they record their consumption of natural gas before the Panels are installed. Gas consumption is higher in cold weather, so the relationship between outside temperature and gas consumption is important. Here are data for 16 consecutive months

Outside temperature is recorded in degree-days, a common measure of demand for heating. A day's degree-days are the number of degrees its average temperature frills below 65^oF. Gas used is recorded in hundreds of cubic feet. Make a plot and describe the pattern. Is correlation a helpful way to describe the pattern? Why or why not? Find the correlation if it is helpful.