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State any two limitations of Statistics.
What are deciles ?

Mention any two methods for measuring correlation.

D 92318

(10 x 2 = 20 marks)

Section C (Short Essay/Problem Type)

Answer any six questions.
Each carries 5 marks.

Define the following with examples.
(i) Transpose of a matrix ; (ii) Inverse of a matrix.
Explain the construction of a Pie diagram.

Solve the following system of linear equations using Cramer's Rule :

x+2y+z=8;2x—y+2z=6;3x+4y+z=14.

Define Geometric mean (G) and Harmonic mean (H). Compute G and H for 10, 20, 20 and 40.

Explain the Principle of least squares.
Distinguish between Regression and Correlation.

Define determinant of a matrix and state any four properties.

Obtain the equation of a straight line which passes through (1, 2) and (3, 4). Also find slope and

intercept.

(6 x 5 = 30 marks)

Section D (Essay Questions)

Answer any two questions.
Each carries 12 marks.

5.9
(i) Find the inverse of the following matrix: |2 6 8].
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1 ಆ be
(ii) Evaluate the determinant }1 5 004 |.
1 6.88

Explain any four measures of central tendency.

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