Acharya Nagarjuna University (ANU) 2009 B.Com Business statistics - Question Paper

ACHARYA NAGARJUNA UNIVERSITY
B.COM (REGULAR) DEGREE exam
(EXAMINATION AT THE END OF 2nd YEAR)
PART – II
BUSINESS STATISTICS
MODAL PAPER
TIME : three HRS MAX .MARKS: 70
part - A (4X5 = 20 MARKS )
* ans any 4 the subsequent every ques. carries five Marks
1) discuss the function of Statistics?
2) What is Skewness? How it differs from dispension?.
3) elaborate the various kinds of Correlation?
4) Components of time series?
5) issues in Construction of Index numbers?
6) Characteristics of a good average?
part – B (5x10=50 MARKS)
*Answer 5 ques. selecting 1 ques. from every Unit 10 Marks
UNIT – I
7) Draw a Histogram for the subsequent data
Marks 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80
Students three five 20 14 six four 20 8
8) Represent by means of percentage bar diagram
Expenditure Family A Family B
Food : 150 350
Clothing : 38 120
Rent : 56 130
Education : 24 68
Miscellaneous : 70 95
2
UNIT – II
9) calculate Modal Value
Mid Value : 16.5 16.01 515.5 15.0 14.5 14.0 13.5 13.0 12.5
F : one 1 18 29 66 63 30 19 4
10) compute Median Lower and Upper Quartiles
Wages (below) 10 20 30 40 50 60 70 80
Workers four 16 30 60 120 150 165 170
UNIT – III
11) compute the Standard deviation
Temperature in Centigrade Degrees No. of Day
-40 - -30 10
-30 - -20 28
-20 - -10 30
-10 - -0 42
0 - 10 65
10 - 20 180
20 - 30 10
12) compute mean deviation and its coefficient for the subsequent data:
Annual Income in Rs. 250 300 325 350 375 425 600
No. of Persons 20 14 six 26 nine 18 7
UNIT – IV
13) compute the Karl Pearsons co-efficient of correlation.
Prices 11 12 1313 14 15 16 17 18 19 20
Supply 30 29 29 25 24 24 24 21 18 15
14) find the 2 Regression formula.
X Series one two three four five six seven eight 9
Y Series nine eight 10 12 11 13 14 16 15
3
UNIT - V
15) Construct the cost of residing index number for the subsequent data based on
Family budget method by using Arthemetic mean and Geometric mean
Base
Price
Year
Quantities
Current Year
Price
Rice 200 10 180
Oil 20 22 22
Clothing 25 18 30
Misc. Expenditure five 30 7
16) From the subsequent particulars calculates four yearly weighted averages for
production
Year 91 92 93 94 95 96 97 98
Production 40 46 50 60 55 42 58 52
* * * * *

Earning:   Approval pending.