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The angular coefficient of the straight line that approximates in the least square sense the following set of points:
x=[0.2 1.14 0.54 0.87 1.25 2.36 0.19 0.54 0.51 0.33]
y=[1.25 2.36 2.58 1.87 2.68 3.41 0.65 0.47 1.36 1.25 ]
is: