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BRM622S - BASIC RESEARCH METHODOLOGY - 2ND OPP - JAN 2023 |
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nAmlBIA un1VERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF HEALTH, NATURAL RESOURCESAND APPLIEDSCIENCES
DEPARTMENT OF AGRICULTUREAND NATURAL RESOURCESSCIENCES
QUALIFICATION:BACHELOROF NATURALRESOURCESMANAGEMENT (NATURE
CONSERVATION)
QUALIFICATIONCODE: 07BNTC
LEVEL: 7
COURSECODE: BRM622S
COURSENAME: BASICRESEARCHMETHODOLOGY
DATE:
DURATION:
JANUARY 2023
3 HOURS
MARKS: 100
SECOND OPPORTUNITY/SUPPLEMENTARY EXAMINATION QUESTION PAPER
EXAMINER(S) Mr Brain J. Mhango
MODERATOR: Prof Ben Strohbach
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLE MATERIALS
1. Examination question paper
2. Answering book
THIS QUESTION PAPERCONSISTSOF 3 PAGES(Excluding this front page)
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ANSWER ALL THE QUESTIONS IN THIS QUESTION PAPER
QUESTION 1
Briefly define the following terms as used in research (3 marks each):
i. Margin of error
ii. Confidence level
iii. Level of significance
iv. Critical value
V. Significance of the study
(15)
QUESTION 2
a) Estimate the Pearson's correlation coefficient of each of the scatterplost from A-G. Proviode your
answer in a table showwing the three main attribtes of a Pearson' correlation coefficient .
. ..
A
8
!i!
0
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ij'
F
0
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0
·10 ·5
o Hs
10
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Your table shoul look like the one shown below:
Scatter Plot
?
?
?
A
B
C
D
E
F
G
H
[12]
b). Eight tomato plants (A-H) of the same variety were selected at random and treated with a solution
in which x grams of fertiliser was dissolved in a litre of water. The yield, y kilograms of tomatoes was
recorded as shown in the table below:
Plant
A
B
C
D
E
F
G
H
X
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
y
3.9
4.4
5.8
6.6
7.0
7.1
7.3
7.7
(i) Plot a scatter diagram of yield versus amount of fertiliser solution
(3)
(ii). Determine the equation of the least squares regression line of yon x
(4)
(iii). Estimate the expected yield of a plant treated weekly with 3.2 grams of fertiliser.
(3)
[10]
QUESTION 3
Provide a set of data for the four scales of measurement (nominal, ordinal, interval and ratio), and
based on your data sets, provide a table and an appropriate graph to represent the data. You must
have a minimum of 10 data elements for each data set. Preferably, relate your data sets to the nature
conservation discipline.
[38]
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QUESTION 4
Discuss how you would arrive at a quantitative research method and highlight your main concerns
before carrying-out the research activity.
(25)
STATISTICS FORMULAS
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