10.

11.

12,

13.

14.

18.
16.
17.

Let A be a matrix such that |A| = 0, then A is said to be:

(a) Orthogonal. (b) Symmetric.

(c) Singular. (8) Non-singular.

With the help of ogives, one can determine :

(a) Mean. (b) Median.
(c) Mode. (d) Geometric mean.
Sum of the deviations about mean is:
(a) Zero. (b) Minimum
(d) One.

(c) Maximum.
If for values of X, A.M.= 25 and H.M. = 9, then the G.M. is:

(a) 17. (b) 165.
(c) 5.88. (d) 16.
If a constant value 5 is subtracted from each observation of a set of data, the variance is:
(a) Reduced by 5. (b) Reduced by 26.
(c) Unaltered. (d) Increased by 26.
If the correlation coefficient 7 5 0, the angle between the two lines of regression is :
(a) 0. (b) 90.
(c) 60. (d) 80.
The lines of regression intersect at the point :
(a) (0, 0). (0) (1, 1).
() 3. (a) (%¥).
(12 x % = 6 marks)

Section B (Short Answer Type)

Answer any ten questions.
Each question carries 2 marks.

Simplify 68x°y° +9x°y’.

Simplify (9) (243) (7296

Define Logarithm.

If log 2 = 0.3010 and log
Define a quadratic equation. Also define the quadratic formula.

3 = 0.4771, find log 12.