7. (14 points) Machine Learning Potpourri: Answer the questions below (a) (3 points) Given the figure below match the regions with the "fit type. 50 Training Performance Testing Performance 40 B 30 Error % 20 A 10 0 10 4 6 Parameter Good Fit: Under Fit: Over Fit: (b) (2 points) Given only the above figure, what value (approximately) would you chose for the parameter? (c) (3 points) You want to use linear regression to fit a function to the data given below where I is the input and y is the output. How would you formulate this, i.e., what would be the form of the function you fit? Make sure to clearly mark the parameters and inputs. 8 6 4 2 -2 -4 -6 0 2 5