Exercise 8.12

Gaussian: ρ = 0.5498 ± 0.0589
Student : ρ = 0.5687 ± 0.0616
Clayton : θ = 1.2526 ± 0.2523
Frank : θ = 0.0191 ± 0.01211829
Gumbel : θ = 0.6149 ± 0.0477