Easy -1.8 This is a straightforward recall question about systematic sampling methodology requiring students to state three basic steps: calculate sampling interval (8000/100=80), randomly select a starting point between 1-80, then select every 80th name thereafter. No calculation complexity, problem-solving, or conceptual depth—purely procedural knowledge that is commonly taught and practiced.
An electoral register contains 8000 names.
A researcher decides to select a systematic sample of 100 names from the register.
Explain how the researcher should select such a sample.
[3 marks]
Question 12:
12 | Explains how to enumerate
population using valid
numbering stating range used | 2.4 | E1 | Give each name a number from 1
to 8000
= 80
8000
100
Randomly select a number
between 1 and 80 and select every
80th person on the register from
the first person selected
Calculates 8000 100 or
80 seen
÷ | 1.1b | B1
Explains that they randomly
select the first person from the
first 80 people and thereafter
every subsequent 80th person
should be selected | 2.4 | E1
Total | 3
Q | Marking Instructions | AO | Marks | Typical Solution
An electoral register contains 8000 names.
A researcher decides to select a systematic sample of 100 names from the register.
Explain how the researcher should select such a sample.
[3 marks]
\hfill \mbox{\textit{AQA Paper 3 2021 Q12 [3]}}