REGRSSION MATHEMATICS QUESTION AND ANSWERS

regression problem and solutions

1. REGRESSION

5. When will the two regression lines be (a) at right angles (b) Coincident?

6. 1. From the following data, find (i) the two regression equations, (ii) the
coefficient of correlation between the marks in Economics and statistics,
(iii) the most likely marks in Statistics when marks in Economics are 30.

11. The regression equations are 3x + 2y = 26 and 6x + y = 31. Find the correlation
coefficient between X and Y.