Question

fit a linear trend curve by the least-squares method to the following data​

Answer 1

Answer:

Fitting a straight line by the method of least squares: Let (x;,yj), t = 0,1,2,....,n be the n sets of observations and let the related relation by y = ax + b. Now we have to select a and b so that the straight line is the best fit to the data. By the principle of least squares, E is minimum.