http://glfwtfwhlsm2u5pw3b7crist7bt7fwepj2wgv3n3b64unj22v5435tyd.onion/blog/2019/10/29/the-magic-that-is-least-squares.html
An example might be: f ( x ) = a + b x + c x 2 f(x) = a + bx + cx^2 f ( x ) = a + b x + c x 2 This function has three parameters: a a a , b b b , c c c .
With linear regression we can find optimal choices for those parameters given a set of points P n = ( x n , y n ) P_n = (x_n, y_n) P n = ( x n , y n ) .