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10.

11.

12.

13. Find the value of | 125 |

ற 91807 -

2
Cost function C = x? + 4x, then MC is
3 2
x x 7
i) —+4—. (ii) 2x +4.
(i) ठ + 2
(iii) ഹ്‌. (iv) None of these.

is a two dimensional diagrammatic data representation.

(i) Frequency curve. (ii) Bar diagram.

(iii) Pie diagram. (iv) Pictogram.

Geometric mean of two values is 4. One of them is 8 the second value is —————————_

(i) 2. Gi) 4.
(111) 8. (iv) 16.
A value which divides the observations into two equal parts is
(i) Mode. (ii) Median.
(111) Decile. (iv) Mean deviation.

For a positively skewed distribution,
(i) Mean = Mode. (ii) Mean < Mode.
(iii) Mean > Mode. (iv) None of these.
If the regression lines are perpendicular, the co-efficient of correlation is
൫ +1 | Gi) ೨1.
(iii) 0. (iv) None of these.

Absolute value of the co-efficient of correlation is of regression co-efficients.

(i) AM. (ii) HM.

(iii) Median. (iv) GM.
(12 x % = 6 marks)

Section B (Short Answer Type)

Answer any ten questions.
Each one carries 2 marks.

2

14. Define Linear equation.