Consider the following about lines of regression:
(A) It is the line of best fit.
(B) It is obtained by the principles of least squares.
(C) It gives the best estimate to the value of one variable for any specific value of other variable.
1
Only one of the above is correct.
2
Only two of the above are correct.
3
All the three of the above are correct.
4
None of them is correct.