| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 3 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Measures of Location and Spread |
| Type | Sampling frames and populations |
| Difficulty | Easy -1.8 This is a straightforward conceptual question requiring only recall of basic sampling terminology. Part (a) asks for standard reasons why destructive testing requires sampling (obvious answer: testing destroys the product), and part (b) asks for a simple definition of sampling frame with no calculation or problem-solving involved. Well below average difficulty for A-level. |
| Spec | 2.01a Population and sample: terminology2.01d Select/critique sampling: in context |
| Answer | Marks | Guidance |
|---|---|---|
| (a) If every rope were tested to breaking point, none would be left | B2 | |
| (b) e.g. a production list of all the ropes manufactured | B1 | Total: 3 marks |
(a) If every rope were tested to breaking point, none would be left | B2 |
(b) e.g. a production list of all the ropes manufactured | B1 | **Total: 3 marks**A company that makes ropes for mountaineering wants to assess the breaking strain of its ropes.
\begin{enumerate}[label=(\alph*)]
\item Explain why a sample survey, and not a census, should be used. [2 marks]
\item Suggest an appropriate sampling frame. [1 mark]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q1 [3]}}