| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Permutations & Arrangements |
| Type | Linear programming and optimization |
| Difficulty | Easy -2.0 This is a straightforward recall question requiring only basic knowledge of census vs sample survey definitions. No calculations, problem-solving, or application of statistical techniques are needed—just stating textbook advantages/disadvantages and providing a simple example. Well below average difficulty for A-level. |
| Spec | 2.01a Population and sample: terminology2.01c Sampling techniques: simple random, opportunity, etc |
| Answer | Marks | Guidance |
|---|---|---|
| (a) advantage – e.g. more accurate; disadvantage – e.g. takes longer | B1, B1 | |
| (b) e.g. getting views of shop staff on changing opening hours as small no. involved and will affect all so need views of all | B2 | (4 marks) |
**(a)** advantage – e.g. more accurate; disadvantage – e.g. takes longer | B1, B1 |
**(b)** e.g. getting views of shop staff on changing opening hours as small no. involved and will affect all so need views of all | B2 | (4 marks)\begin{enumerate}[label=(\alph*)]
\item State one advantage and one disadvantage in using a census rather than a sample survey in statistical work. [2]
\item Give an example of a situation in which you would choose to use a census rather than a sample survey and explain why. [2]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q1 [4]}}