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

What is the median?

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

What is the mode?

What is the mean of natural numbers in the interval [15, 64]?