ECS4863 Latest exam pack questions and answers and summarized notes for exam preparation. Updated for 2025 exams . For assistance Whats-App.0.6.7..1.7.1..1.7.3.9 . All the best on your exams!!
1. Students must upload their answer scripts in a single PDF file on the official myExams
platform (answer scripts must not be password protected or uploaded as “read-only” files).
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the correct answer script file has been uploaded.
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unsatisfactory.
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(including the invigilator cellphone application) will not be marked and no opportunity will be
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for resubmission will be granted.
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opportunity for resubmission will be granted.
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11. Students who have not utilised invigilation or proctoring tools will be deemed to have
transgressed Unisa’s examination rules and will have their marks withheld.
12. Students have 48 hours from the day of their examination to upload their invigilator results
from the Invigilator App. Failure to do so will result in students deemed not to have utilised
invigilation or proctoring tools.
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13. Students must complete the online declaration of their work when submitting. Students
suspected of dishonest conduct during the examinations will be subjected to disciplinary
processes. Students may not communicate with other students or request assistance from
other students during examinations. Plagiarism is a violation of academic integrity, and
students who do plagiarise or copy verbatim from published work will be in violation of the
Policy on Academic Integrity and the Student Disciplinary Code and may be referred to a
disciplinary hearing. Unisa has zero tolerance for plagiarism and/or any other forms of
academic dishonesty.
14. Students are provided 30 minutes to submit their answer scripts after the official examination
time. Students who experience technical challenges should report to the SCSC on 080 000
1870 or their College exam support centers (refer to the Get help during the examinations
by contacting the Student Communication Service Centre (unisa.ac.za)) within 30 minutes.
Queries received after one hour of the official examination duration time will not be
responded to. Submissions made after the official examination time will be rejected by the
examination regulations and will not be marked.
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student for any special concessions or future assessments.
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Postgraduate students experiencing the above challenges are advised to apply for an
aegrotat and submit supporting evidence within ten days of the examination session.
Students will not be able to apply for an aegrotat for a third examination opportunity.
Postgraduate/Undergraduate students experiencing the above challenges in their second
examination opportunity will have to reregister for the affected module.
17. Students experiencing technical challenges should contact the SCSC on 080 000 1870 or
via e-mail at Examenquiries@unisa.ac.za or refer to the Get help during the examinations by
contacting the Student Communication Service Centre (unisa.ac.za) for the list of additional
contact numbers. Communication received from your myLife account will be considered.
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Page 3 of 6 ECS4863
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Answer all four questions
Question 1 (10 marks)
1.1 Explain any two of the Gauss-Markov assumptions that make OLS estimators unbiased. (4)
1.2 Choose any two of the below terms or concepts and explain them in your own words. (2
marks each): (4)
i. Trend stationarity
ii. Integrated stochastic process
iii. Random walk with a drift
iv. Asymptotic normality
1.3 A researcher wants to set up a regression equation using two variables, namely Y and X.
Evaluate the researcher’s options given the following scenario:
Y is I(1); X is I(2) (2)
Question 2: (30 marks)
You are required to estimate the determinants of stock market performance using the dataset
named ECS4863_Q2.xls to answer this question. The variables are
ALSI : JSE All Share Index
TBILL: Treasury bill rate (% per annum)
M3 : Money supply (current prices in R Million))
GOLD: Gold Price in US$ per ounce
ZAR: South African Rand per US$
Prime: Prime overdraft rate (% per annum)
2.1 Perform an ADF unit root test using the option of trend and intercept only on the level and
differenced variables above and interpret the test results. Log-transform these variables before
doing the unit root tests. You can present your answers in a table format. (6)
2.2 Estimate the long-run equilibrium equation (1) below and interpret the coefficients. (3)
Note. Ln indicates that the variable has been log-transformed
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