For each data set below, draw a scatter plot of the data and calculate the correlation coefficient. Be sure to answer the question in the context of the problem!

The owner of a campus coffee cart says that it seems like people buy more coffee when it's colder. Here are coffee sales on eight days of varying temperature. Is her suspicion correct?

Temperature Coffee sales 26.2 32 24.8 39 19.7 51 20 60 13.3 65 13.9 72 11.4 78 11.2 81