B.COM Business Statistics Examination Paper Question With Answer 2014 :- 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

B.Com 1st Year

Examination Paper – 2014

Section-A

Note: This Section contains one question of ten parts requiring short answers. Each parts 4 marks.

(4×10=40)

1. (i) In a frequency distribution, the coefficient of skewness based on quartiles is 0.6. If the sum of the upper and lower quartiles is 100 and median is 38, find the value of both quartiles.

Ans. Refer to Unit-V, Sec-A, Q.12.

(ii) What are the main functions of C.S.O.?

Ans. Refer to Unit-IX, Sec-A, Q.5.

(iii) Write definition and importance of statistics.

Ans. Refer to Unit-I, Sec-A, Q.8.

(iv) What are the differences between primary and secondary data?

Ans. Refer to Unit-II, Sec-A, Q.5.

(v) Distinguish between dispersion and skewness.

Ans. Refer to Unit-V, Sec-A, Q.13.

(vi) The deviations of six numbers from assumed mean 10 are as follows. What are the numbers and what is the value of their mean?

-4, +2, -3, +1, 0, +10

Ans. Refer to Unit-V, Sec-A, Q.14.

(vii) The average rainfall for a week, excluding Sunday, was 10 cm. Due to heavy rainfall on Sunday, the average for the week rose to 15 cm. How much rainfall was there on Sunday?

Ans. Refer to Unit-IV, Sec-A, Q.9.

(viii) Calculate missing frequency from the following, median is 25.625:

 Class 0-10 10-20 20-30 30-40 40-50 F 4 7 16 10 ?

Ans. Refer to Unit-IV, Sec-A, Q.16.

(ix) In a frequency distribution, Karl Pearson’s coefficient of skewness is +0.4 standard deviation is 6.5 and mean is 29.6. Find the mode.

Ans. Refer to Unit-V, Sec-A, Q.11.

(x) From the fixed base index number given below, prepare chain base index number:

 Year 1998 1999 2000 2001 2002 2003 Index No. 188 196 204 190 196 200

Ans. Refer to Unit-VIII, Sec-A, Q.8.

Sections – B, C, D & E

Notes:- Each Section contains two questions. Attempt one question from each Section. Each question comes 15 marks. Answer must be descriptive.

(15~4-60)

Section – B

1. Statistics is not science, it is a scientific method: Discuss critically explaining the scope, utility and limitations of statistics.

Ans. Refer to Unit-I, Sec-B, Q.2.

Or

1. Calculate mode from the following data:
 Class interval 0-9 10-19 20-29 30-39 40-59 60-79 80-99 Frequency 32 36 20 30 48 24 2

Ans. Refer to Unit-IV, Sec-A, Q.20.

Section – C

1. Find out missing frequencies in the following incomplete distribution:
 C.I. 0-10 10-20 20-30 30-40 40-50 F 3 ? 20 12 ?

The value of median and mode are 27 and 26 respectively,

Ans. Refer to Unit-IV, Sec-B, Q.4.

Or

1. Calculate coefficient of correlation between X and Y by the method of rank differences:

 X 48 33 40 9 16 16 65 24 16 57 Y 13 13 24 6 15 4 20 9 6 19

Ans. Refer to Unit-VI, Sec-B, Q.8.

Section – D

1. Below are given the figure of production (in thousand tonnes) of a sugar factory:

 Year 2000 2001 2002 2003 2004 2005 2006 Production 77 88 94 85 91 98 90

(1) Fit a straight line by the method of ‘least square’ and show the trend value.

(ii) What is the monthly increase in production?

Ans. Refer to Unit-VII, Sec-B, Q.4.

or

1. What is correlation? How would you use the following methods in determining correlation?

(i) Karl Pearson’s coefficient of correlation.

(ii) Spearman’s rank difference method.

(iii) Coefficient of concurrent deviation method.

Ans. Refer to Unit-VI, Sec-B, Q.4.