13.2 Diagrama variables continuas

fig, ax = plt.subplots(figsize=(6, 4), facecolor='whitesmoke')
# ax.set_facecolor('whitesmoke')
ax.hist(saber['punt_global'],
    bins = 30,
    color='0.60',
    edgecolor='0.50',
    linewidth=0.8)
ax.set_xlabel('Puntaje global')
ax.set_ylabel('Frecuencia')
ax.set_title('Histograma del Puntaje global')
ax.set_axisbelow(True)
ax.grid(True, axis='y', alpha=0.25)
fig.text(0.85, 0, 'Fuente: ICFES', 
    ha='left', va='center', fontsize=9, style='italic', color='#777777')