Captura la densidad con un grafico hexbin

import numpy as np
import matplotlib.pyplot as plt

rng = np.random.default_rng(42)
session = rng.gamma(shape=3, scale=12, size=1000)   # Duracion de sesion (min)
amount = rng.normal(loc=2500, scale=700, size=1000) # Monto de compra (JPY)

fig, ax = plt.subplots(figsize=(6, 4))
hb = ax.hexbin(
    amount,
    session,
    gridsize=18,
    cmap="Blues",
    mincnt=1,
)
ax.set_xlabel("Monto de compra (JPY)")
ax.set_ylabel("Duracion de sesion (min)")
ax.set_title("Duracion de sesion vs monto de compra (hexbin)")
cb = fig.colorbar(hb, ax=ax, shrink=0.85)
cb.set_label("Conteo")

fig.tight_layout()

plt.show()