Concerns about global warming have led to studies of the relationship between global temperature and the concentration of CO 2 .

Concerns about global warming have led to studies of the relationship between global temperature and the concentration of CO2. Listed below are the concentrations of CO2 in ppm (parts per million) and temperatures in centigrade (C) for different years. What is the linear relationship (r) for the two variables? Interpret the result.

CO2                    314        317        320        326        331        339        346        354        361        369

Temperature      13.9       14           13.9       14.1       14.0       14.3       14.1       14.5       14.5       14.4

any clarification would be appreciated! TIA.