Direction: Consider the following for the next two (02) items that follow.
Two regression lines are given as 3x - 4y + 8 = 0 and 4x - 3y - 1 = 0.
Consider the following statements:
1. The regression line of y on x is $\rm y = \frac{3}{4}x+2$
2. The regression line of x on y is $\rm x = \frac{3}{4}y+\frac{1}{4}$
Which of the above statements is/are correct?
Direction: Consider the following for the next two (02) items that follow.
Two regression lines are given as 3x - 4y + 8 = 0 and 4x - 3y - 1 = 0.
Consider the following statements:
1. The coefficient of correlations r is $\rm \frac{3}{4}$.
2. The means of x and y are 3 and 4 respectively.
Which of the above statements is/are correct?
Direction: Consider the following for the next two (02) items that follow.
The marks obtained by 60 students in a certain subject out of 75 are given below:
| Marks | Number of Students |
| 15 - 20 | 4 |
| 20 - 25 | 5 |
| 25 - 30 | 11 |
| 30 - 35 | 6 |
| 35 - 40 | 5 |
| 40 - 45 | 8 |
| 45 - 50 | 9 |
| 50 - 55 | 6 |
| 55 - 60 | 4 |
| 60 - 65 | 2 |