, IOP2601 ASSIGNMENT 2 SEMESTER 2 2025 – FULLY
ANSWERED (DUE 25 AUGUST 2025)
QUESTION 1 [13]
1.1 _____ is a technique applied to samples in order to make
inferences about populations.
Answer: Inferential statistics. (1)
1.2 The single-sample t-test is used when you have a single set
of scores and are investigating whether the mean of this sample
equals a known mean.
Answer: True (when the population σ is unknown). (1)
1.3 A scale possesses the property of equal intervals if the
difference between all points on that scale is uniform. Is this
statement true or false?
Answer: True. (1)
1.4 State the type of error that occurs when a researcher rejects
a null hypothesis that is actually true.
Answer: Type I error (α error). (1)
1.5 What is the term used when a quantity does not change and
always has the same value?
Answer: Constant. (1)
1.6 Properties of observations that can assume different values
are called _____, whereas a variable that can assume any value
ANSWERED (DUE 25 AUGUST 2025)
QUESTION 1 [13]
1.1 _____ is a technique applied to samples in order to make
inferences about populations.
Answer: Inferential statistics. (1)
1.2 The single-sample t-test is used when you have a single set
of scores and are investigating whether the mean of this sample
equals a known mean.
Answer: True (when the population σ is unknown). (1)
1.3 A scale possesses the property of equal intervals if the
difference between all points on that scale is uniform. Is this
statement true or false?
Answer: True. (1)
1.4 State the type of error that occurs when a researcher rejects
a null hypothesis that is actually true.
Answer: Type I error (α error). (1)
1.5 What is the term used when a quantity does not change and
always has the same value?
Answer: Constant. (1)
1.6 Properties of observations that can assume different values
are called _____, whereas a variable that can assume any value
