P.S
2025
IOP2601 Final Assessment 03 Complete Answers
Due: Tuesday, 29 April 2025 @ 12:00
Semester 1/ 2025
(Total: 50 marks)
Good luck, wish you the best You have got this!
, QUESTION ANSWERS
NUMBER
QUESTION 1
1.1. Why is a sample often used instead of the entire population? (1)
A population is an entire collection of elements or individuals, it is not always possible to
use the entire population, and therefore, we use only a subset of the population known as
a sample. It is easier and more convenient to use a sample. The sample calculation is
used for the measurement we are interested in as an estimate of the population value.
The assumption can be made that what is true for the sample is also true for the
population.
P.G. 12-13 Textbook; P.G. 110- 111 Study Guide
This work belongs to
1.2. What is the purpose of inferential statistics? (1)
Inferential statistics are used to make inferences about a population. The purpose being
to generalise research findings from a sample to a population.
P.G. 10 Study Guide
1.3. A _____ test is typically used to test for association between two categorical
variables. (1)
Χ2 Test (Chi-square test)
P.G. 474 Textbook
1.4. A _____ hypothesis is a negative statement about a possible difference between
the variables that you want to study. (1)
Null hypothesis
P.G. 114 Study Guide
1.5. Which of the following activities describes "sampling"? (1)
c) Identifying and grouping a part of the whole population.
P.G.111 Textbook
This work belongs to
Page 1 of 11
2025
IOP2601 Final Assessment 03 Complete Answers
Due: Tuesday, 29 April 2025 @ 12:00
Semester 1/ 2025
(Total: 50 marks)
Good luck, wish you the best You have got this!
, QUESTION ANSWERS
NUMBER
QUESTION 1
1.1. Why is a sample often used instead of the entire population? (1)
A population is an entire collection of elements or individuals, it is not always possible to
use the entire population, and therefore, we use only a subset of the population known as
a sample. It is easier and more convenient to use a sample. The sample calculation is
used for the measurement we are interested in as an estimate of the population value.
The assumption can be made that what is true for the sample is also true for the
population.
P.G. 12-13 Textbook; P.G. 110- 111 Study Guide
This work belongs to
1.2. What is the purpose of inferential statistics? (1)
Inferential statistics are used to make inferences about a population. The purpose being
to generalise research findings from a sample to a population.
P.G. 10 Study Guide
1.3. A _____ test is typically used to test for association between two categorical
variables. (1)
Χ2 Test (Chi-square test)
P.G. 474 Textbook
1.4. A _____ hypothesis is a negative statement about a possible difference between
the variables that you want to study. (1)
Null hypothesis
P.G. 114 Study Guide
1.5. Which of the following activities describes "sampling"? (1)
c) Identifying and grouping a part of the whole population.
P.G.111 Textbook
This work belongs to
Page 1 of 11
