Business Statistics Question Paper of 3rd Semester BBA Download Previous Years Question Paper 12

Roll No.

Total No. of Questions : 07

BBA (Sem.–3rd)

BUSINESS STATISTICS

Subject Code : BB-304

Paper ID : [C0216]

Time : 3 Hrs.

INSTRUCTION TO CANDIDATES :

1. Section –A, is Compulsory.

2. Attempt any four questions from Section-B.

Section –A

1. (a) What is the relation between Mean, Median and Mode ?

(b) What is Binomial Distribution ? Discuss its features.

(c) What are the limitations of Index numbers ?

(d) Differentiate between Arithmetic Progression and Geometric

Progression.

(e) What are the merits of diagrammatic representation of statistical

Data ?

(f) Differentiate between Mean Deviation and Standard Deviation.

(g) Differentiate between Correlation and Regression.

(h) Define Coefficient of Variation.

(i) Discuss the classical ap proach of probability.

(j) Discuss the properties of Normal Distribution.

SECTION-B

2. (a) Define Standard Deviation. Discuss its properties.

 (b) In two factories A and B, engaged in the same industry in the area,

the average week wages in rupees and the S.D. are as follows :

Factory	Average	S.D.	No. of employees
A	34.5	5.0	476
B	28.5	4.5	524

 (i) Which factory A or B pays out a larger amount on weekly

wages?

(ii) Which Factory A or B has greater variability in individual wages?

3. In a genetic survey, the data of height of fathers (in cms) and height of sons (in cms) were collected. Data are as follows :

Father	165	166	167	167	168	169	171	173	170	166
Son	167	168	164	168	171	170	169	170	169	165

Find the two lines of regression. Calculate correlation coefficient and

expect the average height of son when the height of father is

168.2 cms.

4. Given the following data.

Items	2009		2010
	Price	Quantity	Price	Quantity
Rice	4	6	5	6
Oil	30	2	33	2
Tea	8	1	9	1
Washing powder	6	½	8	1
Sugar	4	4	5	5
Milk	4	3	6	3

5. (a) State the different methods used for diagrammatic representation

of statistical data and indicate briefly the advantages and

disadvantages of each one of them.

(b) In the frequency distribution of 100 families given below, the

number of families corresponding to expenditure groups 20-40

and 60-80 are missing from the table. However, median is known

to be 50. Find the missing frequencies.

Expenditure	0-20	20-40	40-60	60-80	80-100
No. of families	14	?	27	?	15

6. Estimate the trend value by the 4-yearly moving averages method for

the following data:

Year	1997	1998	1999	2000	2001	2002	2003	2004	2005	2066	2007	2008
Value	12	18	26	32	40	60	76	94	100	108	98	90

7. (a) What do you mean by probability? Discuss the Laws of probability?

(b) A salesman is known to sell a product in 3 out of 5 attempts while another salesman in 2 out of 5 attempts. Find the probability that

(i) No sale will take place when they both try to sell the product

(ii) Either of them will succeed in selling the product.