| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Permutations & Arrangements |
| Type | Linear programming and optimization |
| Difficulty | Easy -1.8 This is a straightforward recall question testing basic definitions and application of sampling terminology. Part (a) requires only a textbook definition, while part (b) asks for simple identification of sampling frames in given contexts with no calculation, analysis, or problem-solving required. |
| Spec | 2.01a Population and sample: terminology2.01c Sampling techniques: simple random, opportunity, etc |
| Answer | Marks |
|---|---|
| (a) e.g. list of all the sampling units | B1 |
| (b)(i) frame – list of cars serviced at garage; units – individual cars | B1 |
| (b)(ii) frame – list of people involved in trial; units – individual people | B1 |
(a) e.g. list of all the sampling units | B1 |
(b)(i) frame – list of cars serviced at garage; units – individual cars | B1 |
(b)(ii) frame – list of people involved in trial; units – individual people | B1 |
---\begin{enumerate}[label=(\alph*)]
\item Explain what you understand by the term sampling frame when conducting a sample survey. [1 mark]
\item Suggest a suitable sampling frame and identify the sampling units when using a sample survey to study
\begin{enumerate}[label=(\roman*)]
\item the frequency with which cars break down in the first 3 months after being serviced at a particular garage,
\item the weight loss of people involved in trials of a new dieting programme.
\end{enumerate}
[4 marks]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q1 [5]}}