# Bharathidasan University 2005 B.B.A Business Statistics - Question Paper

Friday, 18 January 2013 05:10Web

**Time:**Three hours

**Maximum:**100 marks

part A—(5 x eight = 40 marks)

ans any 5 of the subsequent.

All ques. carry equal marks.

1.Mention the uses of statistics in different fields.

2.Narrate the characteristics of a good avg..

3.Calculate the median from the subsequent data :

**Marks:**0–20 20–40 40–60 60–80 80–100

No.of students: five 15 30 eight 2

4.Find the mean deviation from median and its coefficient from the subsequent data :

X : 10 11 12 13 14

Y : three 12 18 12 3

5.Define skewness. discuss different measures.

6.What is rank correlation? State its merits.

7.What are the characteristics of index number?

8.What do you mean by interpolation?

part B—(4 × 15 = 60 marks)

ans any 4 of the subsequent

All ques. carry equal marks.

9.

**(**The mean height of 25 male workers in a factory is 61 inches and the mean height of 35 female workers in the identical factory is 58 inches. obtain the combined mean height of

**a)**60 workers in the factory.

(b)The mean marks of 100 students were obtained to be

**40.**Later on, it was discovered that a score of 53 was misread as

**8**obtain the accurate mean corresponding to the accurate score.

**3.**10.Find the standard deviation for the subsequent distribution :

Variable

**(**: 0–5 5–10 10–15 15–20 20–25 25–30 30–35 35–40

**V)**Frequency

**(**: two five seven 13 21 16 eight 3

**f)**11.Calculate the coefficient of skewness.

X : 0 one two three four five six 7

Y : 12 27 29 19 eight four one 0

12.Define correlation. discuss its kinds.

13.In a competition the ranks of 3 judges are as follows. Decide which pair have closest approach (use rank correlation).

Judge A : one five four eight nine six 10 seven three 2

Judge B : four eight seven six five nine 10 three two 1

Judge C : six seven eight one five 10 nine two three 4

14.Compute Fisher's ideal index from the subsequent data :

Item 2005 2006

Price volume Price volume

A six 50 10 56

B two 100 two 120

C four 60 six 60

D 10 30 12 24

E eight 40 12 36

**1**Fit a straight line pattern by the method of lowest squares for the subsequent data and estimate the earnings for the year 2008.

**5.**Year : 1999 2000 2001 2002 2003 2004 2005 2006

Earnings (in crores) : 38 40 65 72 69 60 87 95

Earning: Approval pending. |