Business Statistics 1 (MGSC2206)
Higher Institute of Commerce and Management (HICM)
Semester: Resit
Level: 200
Year: 2016
Part I: (35 marks) Lecturer: Dr. U.E. Jumbo
Instructions: Answer all the questions. Start each exercise on a new page.
Exercise 1
Let us consider the following data on X and Y where X stands for publicity expenditure and Y stands for the
turnover of “Sorel” ready to wear in Bamenda. The data is given for five months in the table below:
Month Turnover (Y) Publicity expenditure (X)
1 3 1
2 4 2
3 2 3
4 6 4
5 8 5
1) What is the nature of the data used to regress Y on X?
2) Regress Y on X, then X on Y.
3) Which regression is in accordance with the underlying theory?
4) Differentiate the regression analysis from the correlation analysis. Which one is appropriate for the
above given data?
Part II: (35 marks) Lecturer: Dr. Dobdinga C.F.
Question one
The following shows marks earned in Statistics I examination:
Marks (X) 0 – 5 5 – 10 10 – 20 20 – 40 40 – 50 50 – 65 65 – 80 80 - 100
Frequency 2 4 8 15 25 28 10 8
REQUIRED:
a) Represent the information using a histogram. Indicate and interpret the frequency polygon.
b) What is the highest mark earn in the statistics examination.
Question two
The following table provides a summary statistic on temperature (in
o
C) between Yaoundé and Douala;
Yaoundé Douala
Mean 29.9 31.4
Variance 12.46 16.89
Comment on the variation of temperature in the two cities using the coefficient of variation.
Question three
a) List and explain the sources of data.
b) Distinguish between stratified and clustered sampling techniques data.
Good Luck!!!
SCHOOL/FACULTY: H.I.C.M DEPARTMENT:
COURSE CODE: MGSC106 COURSE TITLE: Business Statistics 1
SEMESTER: Second NATURE: Resit LEVEL:
LECTURER: Dr. U.E. Jumbo DATE: 22/09/2016 HALL: DURATION: 07:30 – 10:30
REPUBLIC OF CAMEROON
Peace -Work – Fatherland
UNIVERSITY OF BAMENDA
P.O BOX 39 BAMENDA
TEL: 33 36 36 94
REPUBLIQUE DU CAMEROUN
Paix -Travail – Patrie
UNIVERSITE DE BAMENDA
P.O BOX 39 BAMENDA
TEL: 33 36 36 94
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