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1
Introduction to Statistics and Data Science (4ECON006c_n) 
REVISION FOR FINAL EXAM 
 
Date/Time: April 18
th
, 2021 (10:00 and 15:00) 
Time allowed: 2 hours 15 minutes. 
The final exam covers the topics from the second semester. But the students should know some 
concepts from Semester 1 since they are connected. 
There are 2 sections for total of 100 marks. 
Section A: Multiple Choice Questions: 10 questions, 2 marks for each correct answer (20 marks
• Do not circle the answers in the Question booklet. You need to provide your correct 
answers in the Answer booklet. For example,
1. A 
2. B 
3. C 
… 
• There is no need to provide step-by-step solutions for Section A only.
• The student is responsible to write the letters clearly. If two choices are provided, then no 
mark will be given for that question. 
Section B: Open-ended Tasks (80 marks). There will be 4 tasks with subsections (a, b, c, …) on 
each task. 
Requirements on Section B: 
• Provide step-by-step solutions for each task.
• Round your intermediate and final solutions to at least 3 decimals (e.g. 10.234, not 10.23).
Learning outcomes by teaching weeks: 
 
 
Week 1: t-test 
 
• Make distinction between different types of t-tests (independent vs paired). 
• Hypothesis testing on step by step basis (hypotheses, rejection rule, decision
interpretations). 
• Compute degrees of freedoms (exception: you do not need to memorize the df for 
independent t-test with unequal variance) 
• Ability to find the critical values from the t table for given alphas. 
 
Week 2: One-Way ANOVA 
 
• Make distinction between one-way ANOVA and t-test. 
• Hypothesis testing on step by step basis (hypotheses, rejection rule, decision, 
interpretations). 
• Compute degrees of freedoms. 
• Ability to fill out the ANOVA tables when Sum Squares are given. 
• Ability to find the critical values from the F table. 


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