2. Consider the builtin data frame pressure. There are two columns temperature and pressure. (a) (b) (d) Construct a scatterplot with pressure on the vertical axis and temperature on the horizontal axis. Are the variables related linearly or nonlinearly'? The graph of the following function passes through the plotted points reasonablyr well 3; = (0.168 + (1007th The differences between the pressure values predicted by the curve and the observed pressure values are called residuals. Here is a way to calculate them: residuals