7. The function y = 3e* is called :

~ + ction.
(a) Multivariate function. (b) Exponential fun

(d) Implicit function.

(c) Explicit function. arranged iD 020

i hey are
8, ——__—— is the middle most value of the observations when they

order of magnitude.

(a) Mean. (b) Mode.

(c) Median. (d) None of these.

9. IfX and Y related using the relation Y= — 4X, the correlation between X and Y¥ is ——
(a) 0. (b) +1
(०) - 1. (d) None of these.
10. Correlation co-efficient is —————— value.
(a) Absolute value. (b) Relative value.
(0) Average value. (6) None of these.

11. Ifthe two regression coefficients are 0.2 and 0.8, the correlation co-efficient is

(a) 0.2, ൪) 0.4.

(c) 0.8. (d) None of these.
12. The point of intersection of the two regression lines is

(8) (- 1, + 1) (0) (0, 0).

(€) (x,y) (6) None of these.

(12 x % = 6 marks)
Section B (Short Answer Type)

Answer any ten questions,
Each question carries 2 marks.

18. Find the value of (81/16),

14. Explain system of quadratic equations.

15. Find A-) for the matrix A= :
3