Business Statistics Question Paper of 3rd Semester BBA Download Previous Years Question Paper 6

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

l. Write briefly :

a) Define mean and discuss its relative merits and demerits.

b) Distinguish between fixed base and chain base index numbers.

c) Explain the mathematical properties of Standard Deviation.

d) Briefly explain the advantages of tabulation of data.

e) State the properties of Regression analysis.

f) State the limitations of Classical Approach to probability.

g) What are the requirements of a good average?

h) State the advantages of diagrammatic presentation of data.

i) Discuss the merits of Moving Averages method.

j) Define Independent and Mutually Exclusive Events.

2. Find the mean, median, and modal ages of married women at first child

birth.

Age at the first child Birth                No. of married women

18                                                      37

19                                                                         162

20                                                                         343

21                                                                         390

22                                                                         256

23                                                                         433

24                                                                         161

25                                                                         355

26                                                                         65

27                                                               85

28                                                                         49

29                                                                         46

30                                                               40

3. In a survey a person has collected income and expenditure on food of 10

families selected at random. The particulars are as follows :

Income (Rs)	120	90	80	150	130	140	110	95	75	150
Expenditure (Rs)	40	36	40	45	40	44	45	38	50	35

Find correlation coefficient. Estimate the food expenditure for income of

Rs. 125; and predict the income level to meet the food expenditure of

Rs.75.

4. a) What is Dispersion? Discuss briefly various measures of dispersion.

b) Calculate the Standard deviation for the data given below :

Weekly wages (Rs)	No. of Workers
150-180 180-210 210-240 240-270 270-300 300-330 330-360 360-390 390-420	18 23 40 25 16 13 8 5 3

5. Given data :

Items	2009		2010
	Price	Quantity	Price	Quantity
Rice Oil Tea Washing powder Sugar Milk	4 30 8 60 4 4	6 2 1 ½ 4 3	5 33 9 80 5 6	6 2 1 1 5 3

Test the adequacy of index by the Time Reversal Test and the Factor

Reversal Test. (10)

6. a) Define probability. Explain various laws of probability.

b) Probability that a man will be alive 25 years hence is 0.3 and the

probability that his wife will be alive 25 years hence is 0.4. Find the

probability that 25 years hence

i) both will be alive

ii) only the man will be alive

7. What is Time Series? What are its main components? Also discuss the

various methods of Time Series analysis.