A1: 2
A2: 3
A3: 4
A4: 5
A5: 1
A6: 2
A7: 4
A8: 3
A9: 1
A10: 2
B1: 2
B2: 3
B4: 5
B3: 4
B5: 1
B6: 3
B7: 2
B8: 4
B9: 5
B10: 2
ResidualPlot({(2, 2), (3, 3), (4, 4), (5, 5), (1, 1), (2, 3), (4, 2), (3, 4), (1, 5), (2, 2)}, FitPoly[{(2, 2), (3, 3), (4, 4), (5, 5), (1, 1), (2, 3), (4, 2), (3, 4), (1, 5), (2, 2)}, 1])