CAIE S2 2020 Specimen — Question 2 3 marks

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2020
SessionSpecimen
Marks3
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicCombinations & Selection
TypeImplementing simple random or systematic sampling
DifficultyEasy -1.8 This is a basic recall question asking students to describe how to select members for a sample using systematic sampling from a population of 60 students. It requires only knowledge of the definition and procedure for systematic sampling with no calculation or problem-solving involved.
Spec2.01c Sampling techniques: simple random, opportunity, etc

2 Describe briefly how to use random numbers to choose a sample of 10 students from a year-group of 276 students.

Question 2:
AnswerMarks Guidance
AnswerMarks Guidance
(Number students from 1 to 276) Generate 3-digit random numbers1, B1
Ignore numbers \(> 276\)1, B1
Ignore repeats1, B1
Total: 3
## Question 2:

| Answer | Marks | Guidance |
|--------|-------|----------|
| (Number students from 1 to 276) Generate 3-digit random numbers | 1, B1 | |
| Ignore numbers $> 276$ | 1, B1 | |
| Ignore repeats | 1, B1 | |
| **Total: 3** | | |

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2 Describe briefly how to use random numbers to choose a sample of 10 students from a year-group of 276 students.\\

\hfill \mbox{\textit{CAIE S2 2020 Q2 [3]}}