| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 6 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Modelling and Hypothesis Testing |
| Type | Census vs sample decision |
| Difficulty | Easy -2.0 This is a straightforward recall question requiring only textbook definitions of sampling methods with no mathematical content or problem-solving. Students simply need to state standard advantages/disadvantages and give basic examples, making it significantly easier than typical A-level maths questions which require calculation or mathematical reasoning. |
| Spec | 2.01a Population and sample: terminology2.01d Select/critique sampling: in context |
| Answer | Marks | Guidance |
|---|---|---|
| (a) (i) Sample is quick, does not use all population, but may be unreliable | B2 | |
| (ii) Census is accurate, but may be slow and very expensive | B2 | |
| (b) Sample: e.g. lifetime of light bulbs | B1 | |
| Census: e.g. government statistics | B1 | Total: 6 |
(a) (i) Sample is quick, does not use all population, but may be unreliable | B2 |
(ii) Census is accurate, but may be slow and very expensive | B2 |
(b) Sample: e.g. lifetime of light bulbs | B1 |
Census: e.g. government statistics | B1 | **Total: 6**
---\begin{enumerate}[label=(\alph*)]
\item Give one advantage and one disadvantage of
\begin{enumerate}[label=(\roman*)]
\item a sample survey, [2 marks]
\item a census. [2 marks]
\end{enumerate}
\item Suggest a situation in which each could be used. [2 marks]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q2 [6]}}