10.

6

12.

13.
14.
15.
16.

18.

19.

20.
21.

2
Lack of symmetry means :
(a) Positive skewness. (b) Negative skewness.
(c) Skewness. (d) Kurtosis.
Points of inflexion of ogives correspond to :
(೩) Mode. (b) Median.
(c) Mean. ۹ (d) Geometric mean.
Rank correlation is associated to :
(a) Any data. (b) Qualitative data.
(c) Quantitative data. (d) Discrete data.
The maximum value of correlation coefficient is :
(a) 1. (0) 9.
(c) <2. (d) 10.
The Minister of Statistics and Programme Implementation is :
(a) Dr.V.K. Singh. (b) Rahul Gandhi.
(c) Rajnadh Singh. (6) Vasan.

Section B (Very Short Answer Questions)

Answer any ten questions.
Each carries 2 marks.

Solve the quadratic equation 10x? — 9x -1 = 0.
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Solve log, (x? — 4) = 5.

State any four laws of exponents.

Define rank of a matrix.
१ 3 6

If A= and B= , find 2A + 3B.
2.8 7 0

Distinguish between one to one function and many one function.

Find the cofactor of the element 2 in A=

‎ಛು ௯‏ يي
ھص سس 2
6 له بي

‎Define parallel lines with examples.

‎The number of elements of a matrix is 12. What is the possible orders of the matrix ?

‎D 92318

‎(12 x %=6 marks)

‎५