Coefficient of Kurtosis and Radius of Curvature does not give me answers. I have computed the following on a simple example (below are the graphs):

A) "Blunt" Curve -  Mean Radius of Curvature = 8.4261

                              Kurtosis = -0.3292

B) "Sharp" Curve - Mean Radius of Curvature = 8.1548

                              Kurtosis = -0.4628

Values of: x are

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

             A) y are

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1

             B) y are

1, 2, 3, 5, 7, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 5, 4, 2, 1