import matplotlib.pyplot as plt coeff = np.corrcoef(X, Y)[0, 1] plt.figure(figsize=(5,5)) plt.title("correlation coefficient = {0:.3f}".format(coeff)) plt.scatter(X, Y) plt.xlim([0, 1]) plt.ylim([0, 1]) plt.grid() plt.show() Collecting optuna Downloading optuna-2.10.0-py3-none-any.whl (308 kB) [K |████████████████████████████████| 308 kB 5.4 MB/s [?25hRequirement already satisfied: numpy in /usr/l