Wednesday, August 31, 2016

• Wednesday, August 31, 2016

Roll No.
Total No. of Questions : 07
BBA (Sem.–3rd)
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.