N <- 40
E <- 39
n_green <- 10
n_white <- 30
e_green <- 6
e_mixed <- 13

p <- 2 * E / N / (N-1)
m_green <- n_green * (n_green-1)/2 * p
m_mixed <- n_green * n_white * p

# Dyadicity
e_green / m_green

2.666667

0.8666667

$\Rightarrow$ Homophilic