What is meant by a least squares lineSolutionLeastsquare reg

What is meant by a least squares line?

Solution

Least-square regression is a method for finding a line that summarizes the relationship between the two variables, at least within the domain of the explanatory variable x.

Formula :

Y = a+bx

Example :

x = 5,2,1,7 and y = 6,3,6,9.For the values of x and y, Least square regression line equation is Y=0.659x + 3.527