B.COM Business Statistics Examination Paper Question With Answer 2016
B.COM Business Statistics Examination Paper Question With Answer 2016 : Notes Study material Unit Wise Chapter Wise Topic Wise division of the content. Question Answer Study Material Notes Examination Paper Sample Model Paper Previous Year Paper PDF Download This Post is very useful for all the Student B.A., B.Sc., B.Com., M.A., M.Com
Table of Contents
B.Com 1st Year
Examination Paper – 2016
Business Statistics
Section – A
(Short Answer Questions)
Note: This Section contains one question of ten parts requiring short answers. Each part carries 4 marks.
(4×10=40) 1.
 (i) Weekly wages of 10 workers are given below (रू.). Find out first and third quartile:
15, 20, 22, 24, 22, 25, 30, 35, 32, 28.
Ans. Refer to UnitIV, SecA, Q.18.
(ii) The mean marks of 80 students were found to be 50. Later on it was found that score of 55 is misread as 75. Find correct mean.
Ans. Refer to UnitIV, SecA, Q.6.
(iii) Calculate combined mean from the following:
X1 = 100, N1 = 10, X2 = 200, N2 = 20.
Ans. Refer to UnitIV, SecA, Q.12.
(iv) What is meant by time series?
Ans. Refer to UnitVII, SecA, Q.1.
(v) Write the formula of Fisher’s ideal index number.
Ans. Refer to UnitVIII, SecB, Q.5.
(vi) Find out the standard deviation from the following:
N=10, EX = 60, EX2 = 1,000.
Ans. Refer to UnitV, SecA, Q.8.
(vii) Ifr = 0.4 and N= 25, is the value of r significant?
Ans. Refer to UnitVI, SecA, Q.14.
(viii) Give the names of four nongovernment statistical organisations.
Ans. Refer to UnitIX, SecA, Q.9.
(ix) What do you mean by distrust of statistics?
Ans. Refer to UnitI, SecB, Q.3.
(x) Find out median, if mean = 20 and mode = 18.
Ans. Refer to UnitIV, SecA, Q.19.
Sections – B, C, D & E
(Descriptive Answer Questions)
Note: Each Section contains two questions. Attempt one question from each Section. Each question carries 15 marks. Answer must be descriptive.
(15×4=60)
Section – B
 (i) From the following information, find out the rank coefficient of correlation:
ED2 = 50, N=10.
Ans. Refer to UnitVI, SecA, Q.10.
(ii) The rank correlation coefficient between marks obtained by some students in statistics and
costing is 0.8. If the total of squares of rank differences is 33, find out the number of students.
Ans. Refer to UnitVI, SecA, Q.12.
Or
 Calculate mean and mode from the following series:
Income Limit (रू.) 
No. Of persons 
100200 
15 
100300 
30 
100400 
63 
100500 
83 
100600 
100 
Ans. Refer to UnitIV, SecB, Q.11.
 The following table gives the annual wages of a worker together with the price index numbers. Compute the index numbers of real wages of the worker:
Year wage 
Price (रू.) 
Index number 
2000 
400 
100 
2001 
480 
160 
2002 
700 
280 
2003 
720 
290 
2004 
720 
300 
2005 
740 
320 
2006 
750 
300 
Section – c
Ans. Refer to UnitVIII, SecB, Q.10.
Or
 What do you mean by dispersion? How is it measured? Distinguish clearly between dispersion and skewness.
Ans. Refer to UnitV, SecB, Q.1.
Section – D
 (i) A machine is depreciated by 40% in the first year, by 25% in the second year and by 10% per annum for next three years. Each percentage is calculated on the diminishing value. What is average rate of depreciation?
Ans. Refer to UnitIV, SecA, Q.13.
(ii) Convert the following into continuous series and then prepare ‘less than’ cumulative series:
Marks (mid value) 
5 
15 
25 
35 
45 
55 
No. of students 
8 
12 
15 
9 
4 
2 
Ans. Refer to UnitIII, SecB, Q.7.
 What do you know about mode? Discuss its merits and demerits.
Ans. Refer to UnitIV, SecB, Q.8.
Section – E
 Calculate Fisher’s ideal index number for the year 2006 with 2000 as base using the following data,
Commodity 
Year – 2000 
Year – 2006 


Expenditure (रू.) 
Price (रू.) 
Expenditure (रू.) 
Price (रू.) 
X 
300 
10 
150 
10 
Y 
400 
8 
250 
25 
Z 
420 
7 
200 
40 
Ans. Refer to UnitVIII, SecB, Q.8.
 Find the mode from the given data:
Ans. Refer to UnitIV, SecB, Q.12.
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