Business Statistics 1 (MGSC2206)

Higher Institute of Commerce and Management (HICM)

Semester: Second Semester

Level: 200

Year: 2019

Answers (200 )
THE UNIVERSITY OF BAMENBA
HIGHER INSTITUTE OF COMMERCE AND MANAGEMENT (HICM) SECOND
SEMESTER EXAMINATIONS 2018/2019 ACADEMIC YEAR
COURSE: BUSINESS STATISTICS CODE: CV: 6 Status: C
Lecturer: Prof. Dobdinga C.F. Duration: 2 Hours
INSTRUCTIONS: Answer ALL the Questions
Question one (20 marks)
a) Briefly differentiate between Stratified and cluster sampling techniques (6mks)
b) List two importance of sampling. (2mks)
c) List and explain any two (2) components of a time series. (4mks)
d) List two uses of statistics in business (2mks)
e) With examples differentiate between quantitative and qualitative variables (6mks)
Question two (20 marks)
A stock accountant has obtained the following information involving the production of a certain product
per quarter
Quarters
Year
Qi
Q2
Q3
Q4
2010
3
4
5
6
2011
4
5
5
8
2012
6
9
7
10
i) Determine the two-point moving average (6mks)
ii) Determine the trend line: Y = a + bX and find the following; (9mks)
iii) The value of production in 2014 - Q4 (2.5mks)
iv) The year and quarter during which the company can produce the output level of 15 (2.5mks)
Question three (10 marks)
The following information gives a summary of the composition of workers in UIDB (S=Security,
L=Lecturer, G=Guard, E=Electrician, M= Mechanic, C=Cleaner
S,L,L,G,S,G,L,L,L,C,C,L,S,G,.E,E,E,S,L,G,G,L,L,L,L,L,L,C,C,L,S,G,E,E
,
E,S,L,G,G,L,L,L,L,L,L,C,
L,L,L,C,S,S,S,S,M,M,L,L,L,C,C,L,S,G,E,E,E,S,L,G,G,L,L,L,L,L,L,C,C,L,S,G,E,E,E,S,L,G,G,L,L,L,,
C,L,S,G,E,E
,
E,S,L,G,G,L
,
L,L,M,M,L,L,L,C,C,L,S,G,E,E,E,S,M,M,M,M,M,L,G,G,L
,
M,M,M,L,L,
Prepare a frequency table showing the tally, relative frequency and percentage frequency
Question four (20 marks)
The following sample shows the estimated total cost (Y) in millions of FCFA used in the production of
tomatoes (X) in tons at DCF Farm
Y
200
85
115
200
140
65
70
^65”
125
190
X
400
150
220
500
300
100
150
150
240
350
a) Represent the information using a scatter diagram (5mks)
b) Determine and interpret the product moment and spearman’s rank correlation coefficient (15mks)
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