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47 lines
981 B
Python
47 lines
981 B
Python
2 years ago
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import matplotlib.pyplot as plt
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import numpy as np
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#x = [146.66, 293.33, 439.99, 573.33, 693.33, 773.33, 839.99, 879.99]
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x = [0.3, 0.4, 0.5, 0.6, 0.8, 1.0]
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#y = [-37, -79, -122, -161, -194, -218, -234, -245]
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#y=[-53, -110, -165, -214, -261, -292, -314, -327]
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#y = [-67, -137, -209, -274, -328, -368, -395, -411]
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#y = [-83, -166, -249, -327, -393, -441, -474, -496]
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#y = [-113, -229, -336, -442, -531, -595, -638, -664]
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#y = [-142, -286, -424, -553, -663, -745, -800, -831]
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#y=[135, 277, 417, 547, 660, 736, 791, 821]
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y = [-0.28, -0.38, -0.47, -0.56, -0.75, -0.94]
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u0 = 0
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if len(x) != len(y):
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print("size mismatch")
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exit()
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y = [i - u0 for i in y]
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n = len(x)
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mean_xy = 0
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mean_x_sq = 0
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for i in range(n):
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mean_xy += x[i] * y[i]
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mean_x_sq += x[i] ** 2
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mean_xy /= n
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mean_x_sq /= n
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k = mean_xy / mean_x_sq
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print("k = ", k)
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plt.scatter(x,y)
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#plt.show()
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x_axis = np.array(range(0, 1000))
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y_axis = k * x_axis
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plt.plot(x_axis, y_axis)
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plt.show()
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#`plot(x, y))
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