1 Which of the following is true for the method of least squ

1) Which of the following is true for the method of least squares:

A)It allows us to fit a straight line or a quadratic to a set of data

B)It should only be used if all datra points fall on a straight line

C)It requires that the sum of the vertical deviations from the points to the line be minimized

D)It should only be used if the relationship between the two variables is reasonable close to linear

2)The symbol used to indicate the y values of points on a least-squares regression line is

A)b

D) y

Solution

The “Method of least squares” is the sum of the squares of the residuals is minimum.

So, the appropriate option is (C).