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B.Com (II Semester) Examination
COMMERCE
Paper : BCM–201 (Old Course)
( Business Statistics and Mathematics )
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
Note : 1. Answer as per instruction in each Section.
2. The figures in the margin indicate full marks for the questions.
Section—I
1. Answer the following questions : 2×5=10
(a) What is arithmetic mean?
(b) Mention two sources of secondary data.
(c) What is median?
(d) What is a bar diagram?
(e) What is variance?
Section—II
2. Answer any four of the following questions : 5×4=20
(a) What is combined arithmetic mean?
(b) Differentiate between questionnaire and schedule.
(c) How would you compute quartile in continuous series?
(d) Explain four parts of a statistical table.
(e) What is standard deviation?
(f) What is Bowley’s coefficient of skewness?
Section—III
3. Answer any five of the following questions : 10×5=50
(a) What is primary data? Briefly explain the methods of collecting the primary data.
(b) How would you compute median in continuous series?
(c) What is diagrammatic and graphic presentation of data? Explain briefly.
(d) Find mean and median from the following data :
(f) Calculate Karl Pearson’s coefficient of skewness from the following data :
