import numpy as np
import matplotlib.pyplot as plt

heights = [ 1.83, 1.76, 1.69, 1.86, 1.77, 1.73 ]
weights = [ 86,    74,    59,   95,    80,   68  ]

np_heights = np.array(heights)
np_weights = np.array(weights)

bmi = np_weights/(np_heights**2)
print(bmi)
'''
plt.plot(bmi)
plt.show()
'''