Least-Squares Fitting of Linear Model

This screen capture video is from my course "Applications of matrix computations," lecture given on March 28, 2018 at University of Helsinki, Finland.
We consider the problem of fitting a line to a set of measurement points. Our starting point is seven data points (real numbers) m1, m2, ..., m7, measured at times t1=1, t2=2, ..., t7=7 seconds. Here they are not really measured; we just gave some values that came to mind.
We assume an ideal linear model of the form m=at+b, where a and b are unknown numbers to be solved.
The problem is written as a 7x2 matrix equation and solved in the sense of least squares using pseudoinverse.
Matlab code is available here:
www.dropbox.com/s/t57lkzk3t3o...

[@parameshwarhazra2725]

Extreme helpful

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thanks