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Use Matlab and write entier script Problem 2. Generate the estimate (linear estimate) for y_est, and plot(x...

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Mechanical Engineering

Use Matlab and write entier script

Problem 2.

Generate the estimate (linear estimate) for y_est, and plot(x ,y_est).

Use “hold on” and plot(x,y) and plot(x,y_est), so that you cansee the result of the line and how it fits the data.  Does it look like it did a pretty good job?

An estimate of the “residual error” is the sum of the squares ofthe difference between y and y_est.

This is often denoted as r2.

r2 = sum( (y – y_est) .^2)

or equivalently

r2 = sum( (y – y_est)’ * (y – y_est)’)

What is the residual error for the above problem?

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