Consider the Fungus growth data from Exercise 12.2.7. (a) Calculate the linear regression of Y on X.

Question:

Consider the Fungus growth data from Exercise 12.2.7.
(a) Calculate the linear regression of Y on X.
(b) Plot the data and add the regression line to your graph. Does the line appear to fit the data well?
(c) SS(resid) = 16.7812. Use this to compute se. What are the units of se?
(d) Draw a ruler line on your graph to show the magnitude of se. (See Figure 12.3.8).